| Mk | Entry | Card | Episode |
| O soave fanciulla. | 095.1A | Swarm, The. [VGR] | |
| O'Brien, Keiko. | 025.34E.[AD | Data's Day. [TNG] | |
| O'Brien, Keiko. | 043.049. | Data's Day. [TNG] | |
| O'Brien, Keiko. | 070.002-a | Man Alone, A. [DS9] | |
| O'Brien, Keiko. | 070.045-a | House of Quark, The. [DS9] | |
| O'Brien, Keiko. | 070.083-a | Accession. [DS9] | |
| O'Brien, Keiko. | 095.1D | Data's Day. [TNG] | |
| O'Brien, Keiko. (and the Pah-wraith) | 043.049A | ||
| O'Brien, Keiko. (Blasphemous teachings) | 010APP1[B | In the Hands of the Prophets. [DS9] | |
| O'Brien, Keiko. (canapes) | 083.02J | House of Quark, The. [DS9] | |
| O'Brien, Keiko. (Collateral damage) | 043.049A[A | Assignment, The. [DS9] | |
| O'Brien, Keiko. (Family life) | 043.049[A.a | Disaster. [TNG] | |
| O'Brien, Keiko. (Family life) | 043.049[A.b | Data's Day. [TNG] | |
| O'Brien, Keiko. (Family life) | 043.049[A.c | Begotten, The. [DS9] | |
| O'Brien, Keiko. (Miniature emergency) | 043.047B[A | Rascals. [TNG] | |
| O'Brien, Keiko. (Pah-wraith plot) | 005.01ii[B | Assignment, The. [DS9] | |
| O'Brien, Keiko. (Possessed by an evil entity) | 010.16B[A | Assignment, The. [DS9] | |
| O'Brien, Kirayoshi. | 044.32.b | Begotten, The. [DS9] | |
| O'Brien, Kirayoshi. | 095.1E | Begotten, The. [DS9] | |
| + | O'Brien, Kirayoshi. (Kirayoshi's crying) | 047.01E[A | Business As Usual. [DS9] |
| + | O'Brien, Kirayoshi. (Kirayoshi's crying) | 070.110-a | Business As Usual. [DS9] |
| + | O'Brien, Kirayoshi. (optronic emitters) | 095.4T.b | Business as Usual. [DS9] |
| + | O'Brien, Kirayoshi. (pit, the) | 096.07AB | Business As Usual. [DS9] |
| O'Brien, Michael. | 095.1F | Disaster. [TNG] | |
| O'Brien, Miles (mirror). | 018APP2E.[A | Crossover. [DS9] | |
| O'Brien, Miles (mirror). (in the mirror universe) | 043.047H | Crossover. [DS9] | |
| O'Brien, Miles (mirror). (On the offensive) | 043.047H[A | Shattered Mirror. [DS9] | |
| O'Brien, Miles (mirror). (Smiley. SEE: O, M) | 099.11X | Crossover. [DS9] | |
| O'Brien, Miles. | 013.09-a | Tribunal. [DS9] | |
| O'Brien, Miles. | 025.34C.[AD | Encounter at Farpoint, Parts I & II. [TNG] | |
| O'Brien, Miles. | 027.20.[D | Encounter at Farpoint, Parts I & II. [TNG] | |
| O'Brien, Miles. | 043.047. | Encounter at Farpoint, Parts I & II. [TNG] | |
| O'Brien, Miles. | 070.085-a | Hard Time. [DS9] | |
| O'Brien, Miles. | 070.104-a | Begotten, The. [DS9] | |
| O'Brien, Miles. | 095.1G | Encounter at Farpoint, Parts I & II. [TNG] | |
| O'Brien, Miles. (index) | 001.040. | Encounter at Farpoint, Parts I & II. [TNG] | |
| O'Brien, Miles. (index, r o S o) | 001.092.[P | Encounter at Farpoint, Parts I & II. [TNG] | |
| O'Brien, Miles. (alien encounters) | 043.047G | ||
| O'Brien, Miles. (An issue of trust) | 018.059[C.a | Armageddon Game. [DS9] | |
| O'Brien, Miles. (and Bashir, Dr. Julian, friendship) | 043.047E | ||
| O'Brien, Miles. (Black ops) | 043.135[A | Honor Among Thieves. [DS9] | |
| O'Brien, Miles. (Cardassian prisoners) | 013.11[B.a | Tribunal. [DS9] | |
| O'Brien, Miles. (Close calls) | 043.047[A.a | Armageddon Game. [DS9] | |
| O'Brien, Miles. (Close calls) | 043.047[A.b | Whispers. [DS9] | |
| O'Brien, Miles. (closeness with Kira) | 070.095-a1 | Looking for par'Mach in All the Wrong Places. [DS9] | |
| O'Brien, Miles. (Cold war) | 013.05[B | Tribunal. [DS9] | |
| O'Brien, Miles. (Danger on the job) | 004.40[A.c | Realm of Fear. [TNG] | |
| O'Brien, Miles. (Dominion war and beyond) | 043.047I | ||
| O'Brien, Miles. (early life and career) | 043.047A | ||
| * | O'Brien, Miles. (Facing death together) | 043.047E[A.a | Extreme Measures. [DS9] |
| O'Brien, Miles. (friends and family) | 043.047D | ||
| O'Brien, Miles. (future O'Brien, no radiation) | 005.29E-b | Visionary. [DS9] | |
| O'Brien, Miles. (holodeck) | 070.088-a1 | Way of the Warrior, The, Parts I & II. [DS9] | |
| O'Brien, Miles. (humanoid form) | 016.2F.[I.h | Homefront. [DS9] | |
| * | O'Brien, Miles. (In the mind's eye) | 043.047I[A | Extreme Measures. [DS9] |
| O'Brien, Miles. (leader) | 043.047F | ||
| O'Brien, Miles. (Looking out for others) | 043.047G[A | Captive Pursuit. [DS9] | |
| O'Brien, Miles. (love of technology) | 043.047C | ||
| * | O'Brien, Miles. (mining equipment) | 070.155-a | Prodigal Daughter. [TNG] |
| O'Brien, Miles. (mother and replicators) | 069.084-a | Wounded, The. [TNG] | |
| O'Brien, Miles. (O'Brien as mentor) | 043.047F[A | Favor the Bold. [DS9] | |
| O'Brien, Miles. (O'Brien on the brink) | 018.100[B.a | Hard Time. [DS9] | |
| O'Brien, Miles. (O'Briens time off) | 027.29[A | In the Cards. [DS9] | |
| O'Brien, Miles. (Off-duty) | 043.047A[A.a | Whispers. [DS9] | |
| O'Brien, Miles. (Off-duty) | 043.047A[A.b | Realm of Fear. [TNG] | |
| O'Brien, Miles. (Off-duty) | 043.047A[A.c | Bar Association. [DS9] | |
| O'Brien, Miles. (on the Enterprise-D, U.S.S.") | 043.047B | ||
| O'Brien, Miles. (Perfect copy) | 018.061[B | Whispers. [DS9] | |
| O'Brien, Miles. (prosthetics and plastic surgery) | 066.15.j | Apocalypse Rising. [DS9] | |
| O'Brien, Miles. (pulse that wasn't there) | 005.29E-a | Visionary. [DS9] | |
| O'Brien, Miles. (quantum flux regulator) | 097.2C | Hard Time. [DS9] | |
| O'Brien, Miles. (quantum singularity) | 005.29E.b | Visionary. [DS9] | |
| O'Brien, Miles. (quantum singularity) (index, a r) | 001.096.[K | Visionary. [DS9] | |
| O'Brien, Miles. (Sabotage) | 027.18[B.a | Assignment, The. [DS9] | |
| * | O'Brien, Miles. (seventy three Starfleet personnel) | 016.9-a | Extreme Measures. [DS9] |
| O'Brien, Miles. (shapeshifter) | 070.078-a | Paradise Lost. [DS9] | |
| O'Brien, Miles. (socks) | 069.097-a | In Theory. [TNG] | |
| O'Brien, Miles. (surgical alterations) | 066.15C.[I.c | Apocalypse Rising. [DS9] | |
| O'Brien, Miles. (The best of friends) | 043.047D[A.a | Rivals. [DS9] | |
| O'Brien, Miles. (telegraph) | 070.116-a | Empok Nor. [DS9] | |
| O'Brien, Miles. (Time twins) | 005.15[B.a | Visionary. [DS9] | |
| O'Brien, Miles. (tore his pants) | 004.59-b | Rocks and Shoals. [DS9] | |
| O'Brien, Miles. (Tosk and ship) | 018.053A-a | Captive Pursuit. [DS9] | |
| O'Brien, Miles. (weapons reclibration) | 070.113-a1 | Soldiers of the Empire. [DS9] | |
| O'Brien, Miranda. | 018APP3A.[G | Children of Time. [DS9] | |
| O'Brien, Miranda. | 095.1H | Children of Time. [DS9] | |
| O'Brien, Molly. | 044.32.a | Disaster. [TNG] | |
| O'Brien, Molly. | 095.1I | Disaster. [TNG] | |
| O'Brien, Molly. (exbologist) | 004.61-b | Time's Orphan. [DS9] | |
| O'Brien, Molly. (exbologist) | 085.11V | Time's Orphan. [DS9] | |
| + | O'Brien, Molly. (Fredericks) | 086.08Z | Cardassians. [DS9] |
| O'Brien, Molly. (Golanan time portal) | 005.29G.b | Time's Orphan. [DS9] | |
| O'Brien, Molly. (Hard to cope) | 005.29G[B | Time's Orphan. [DS9] | |
| O'Brien, Molly. (Piggy) | 096.07N | Fascination. [DS9] | |
| O'Brien, Sean Aloysius. (anthracite strike of 1902) | 007.03J-a | Bar Association. [DS9] | |
| O'Brien, Sean Aloysius. (anthracite strike of 1902) | 081.12T.b | Bar Association. [DS9] | |
| * | O'Claire, Katie. | 095.7A | Fair Haven. [VGR] |
| O'Connel, Steve. | 095.1K | And the Children Shall Lead. [TOS] | |
| O'Connel, Steve. (Let the children play) | 044.60[A.c | And the Children Shall Lead. [TOS] | |
| * | O'Donnel, Shannon. | 044.44. | 11:59. [VGR] |
| * | O'Donnel, Shannon. | 095.7B | 11:59. [VGR] |
| O'Donnell, Juliana. SEE: Tainer, Dr. Juliana. | 095.1M | ||
| \ | O'Donnell. | 029.43C.[S | Worst Case Scenario. [VGR] |
| \ | O'Donnell. | 095.1L | Worst Case Scenario. [VGR] |
| \ | O'Fallon, Marty. | 025.10C.[I | Manhunt. [TNG] |
| O'Halloran, Ensign. | 095.1N | In the Flesh. [VGR] | |
| * | O'Halloran, Maggie. | 029.11A[C | Fair Haven. [VGR] |
| * | O'Halloran, Maggie. | 095.7C | Fair Haven. [VGR] |
| * | O'Halloran, Maggie. (holographic animals) | 066.34A.g | Spirit Folk. [VGR] |
| O'Herlihy, Lieutenant. [CAST] | 020.01K.[B | Arena. [TOS] | |
| O'Neil, Lieutenant. | 020.01K.[C | Return of the Archons, The. [TOS] | |
| O'Neil, Lieutenant. | 095.1O | Return of the Archons, The. [TOS] | |
| O'Neill, Ensign. | 020.01K.[D | Galileo Seven, The. [TOS] | |
| O'Neill, Ensign. | 095.1P | Galileo Seven, The. [TOS] | |
| * | O'Zaal, Ambassador. | 095.7D | Drive. [VGR] |
| * | O'Zaal, Ambassador. (Trouble at the top) | 018.165[B | Drive. [VGR] |
| * | O-type star. | 095.1Q | Juggernaut. [VGR] |
| Oath of celibacy. | 095.1R | Star Trek: The Motion Picture. | |
| oatmeal. (food. SEE:) | 086.07G.bh | For the Cause. [DS9] | |
| Obatta cluster. | 003.8.[R | Quickening, The. [DS9] | |
| Obatta cluster. | 095.1S | Quickening, The. [DS9] | |
| Obelisk. | 095.1U | Paradise Syndrome, The. [TOS] | |
| Oberth-class starship. | 019.01C[h | Star Trek III: The Search for Spock. | |
| Oberth-class starship. | 095.1V.a | Star Trek III: The Search for Spock. | |
| Oblissian cabbage. | 095.1W | Elogium. [VGR] | |
| Oblissian cabbage. (c, O) | 083.01C | Elogium. [VGR] | |
| Obrist. | 095.1X | Year of Hell, Part I. [VGR] | |
| Obrist. (Annorax's downfall) | 058.042[A | Year of Hell, Part II. [VGR] | |
| observation lounge. (Enterprise-D, U.S.S.") | 025.01P.[D | ||
| observation lounge. (Enterprise-D, U.S.S.") | 025.16. | ||
| observation lounge. (Enterprise-D, U.S.S.") (Deck 1) | 025.01E.[B | ||
| observation lounge. (Enterprise-D, U.S.S.") (other lounges) | 025.16A | ||
| observation lounge. (Enterprise-E, U.S.S.") | 026.05. | ||
| Obsidian Order. | 013.02-b | Improbable Cause. [DS9] | |
| Obsidian Order. | 013.03. | Wire, The. [DS9] | |
| Obsidian Order. | 013.14-b | Defiant. [DS9] | |
| Obsidian Order. | 070.051-a | Defiant. [DS9] | |
| Obsidian Order. | 095.1Y | Wire, The. [DS9] | |
| Obsidian Order. (index, c o) | 001.087.[Q | Wire, The. [DS9] | |
| Obsidian Order. (Cardassian brutality) | 013.02[A.c | Wire, The. [DS9] | |
| Obsidian Order. (cryogenic chambers) | 083.20X | Second Skin. [DS9] | |
| Obsidian Order. (fleet destruction) | 018.002A-b2 | Improbable Cause. [DS9] | |
| Obsidian Order. (From strength to weakness) | 013.10[A | Die Is Cast, The. [DS9] | |
| Obsidian Order. (Kindred spirits) | 013.03[A.a | Improbable Cause. [DS9] | |
| Ocampa planet. | 003.6A.[A | Caretaker, Parts I & II. [VGR] | |
| Ocampa planet. | 003.7D.[M | Caretaker, Parts I & II. [VGR] | |
| Ocampa planet. (city) | 018.005A | Caretaker, Parts I & II. [VGR] | |
| Ocampa planet. (city) (food) | 018.121-b | Caretaker, Parts I & II. [VGR] | |
| Ocampa planet. (city) (Water) | 018.005A[A | Caretaker, Parts I & II. [VGR] | |
| Ocampa planet. (Ideal homes) | 018.005[A | Caretaker, Parts I & II. [VGR] | |
| Ocampa planet. (Warming, The) | 103.1V | Caretaker, Parts I & II. [VGR] | |
| Ocampa. | 018.005. | Caretaker, Parts I & II. [VGR] | |
| Ocampa. | 018.005-b | Caretaker, Parts I & II. [VGR] | |
| Ocampa. | 071.067-b | Caretaker, Parts I & II. [VGR] | |
| Ocampa. | 095.2A | Caretaker, Parts I & II. [VGR] | |
| Ocampa. (index, t) | 001.097.[I | Caretaker, Parts I & II. [VGR] | |
| Ocampa. (Order of Ocampa) | 058.123[A | Caretaker, Parts I & II. [VGR] | |
| Ocampa. (other groups and races) | 018.001.t | Caretaker, Parts I & II. [VGR] | |
| Ocampa. (sand scrub) | 018.005A-a | Caretaker, Parts I & II. [VGR] | |
| Ocampa. (telekinesis) | 100.08O.g | Cold Fire. [VGR] | |
| Ocampa. (The Caretaker's 'children') | 018.121[A | Caretaker, Parts I & II. [VGR] | |
| * | Ocean planet. | 095.2B | Thirty Days. [VGR] |
| * | Ocean Planet. (Underwater world) | 018.125[A | Thirty Days. [VGR] |
| Oceanus IV. | 003.3X.[I | Game, The. [TNG] | |
| Oceanus IV. | 095.2C | Game, The. [TNG] | |
| Ocett, Gul. | 050.14. | Chase, The. [TNG] | |
| Ocett, Gul. | 095.2D | Chase, The. [TNG] | |
| Ocett, Gul. (Cardassian duplicity) | 011.16B[A | Chase, The. [TNG] | |
| Ocett, Gul. (Galor-class Cardassian warship) | 036.01.g | Chase, The. [TNG] | |
| ocular implant. | 095.2E | Star Trek: First Contact. | |
| ocular implant. (bioimplants) | 066.39.i | Star Trek: First Contact. | |
| Odala, Minister. | 058.037A | Distant Origin. [VGR] | |
| Odala, Minister. | 095.2F | Distant Origin. [VGR] | |
| Odan, Ambassador. | 007.18B.[B | Host, The. [TNG] | |
| Odan, Ambassador. | 046.3. | Host, The. [TNG] | |
| Odan, Ambassador. | 095.2G | Host, The. [TNG] | |
| Odan, Ambassador. (father) | 069.095-a | Host, The. [TNG] | |
| Ode to Spot. | 095.2H | Schisms. [TNG] | |
| Ode to Spot. (Poetic tribute) | 058.025[A | Schisms. [TNG] | |
| Odell, Brenna. | 095.2I | Up the Long Ladder. [TNG] | |
| Odell, Danilo. | 095.2J | Up the Long Ladder. [TNG] | |
| Odell, Danilo. (whiskey) | 103.5Q.b | Up the Long Ladder. [TNG] | |
| Odin, S.S." | 018.010-a | Angel One. [TNG] | |
| Odin, S.S." | 095.2K | Angel One. [TNG] | |
| Odin, S.S." (Changing times) | 018.010[B | Angel One. [TNG] | |
| Odin, S.S." (Freighters) | 040APP1[AB | Angel One. [TNG] | |
| * | ODN line. | 071.117-b | Survival Instinct. [VGR] |
| ODN recoupler. | 095.1C.b | Hard Time. [DS9] | |
| ODN. | 095.1C.a | Nth Degree, The. [TNG] | |
| Odo (mirror). | 018APP2E.[B | Crossover. [DS9] | |
| odo'ital. | 095.2L.b | Heart of Stone. [DS9] | |
| Odo. | 016.2-b | ||
| Odo. | 043APP2 | Emissary, Parts I & II. [DS9] | |
| * | Odo. | 070.168-a | Dogs of War, The. [DS9] |
| Odo. | 095.2L.a | Emissary, Parts I & II. [DS9] | |
| Odo. (index) | 001.043. | Emissary, Parts I & II. [DS9] | |
| Odo. (adapting) | 016.2C.[A | Children of Time. [DS9] | |
| Odo. (Alien love) | 043APP2D[A.a | Simple Investigation, A. [DS9] | |
| Odo. (Alien love) | 043APP2D[A.b | His Way. [DS9] | |
| Odo. (and Kira Nerys) | 043APP2B | ||
| Odo. (and Pol, Dr. Mora and adult life) | 043APP2E | ||
| Odo. (and Quark) | 043APP2H | ||
| Odo. (and romance) | 043APP2D | ||
| Odo. (and the Dominion) | 043APP2G | ||
| Odo. (animals) | 016.2C.[D | Shadowplay. [DS9] | |
| Odo. (anti-changeling device) | 016.2J.[I | Die Is Cast, The. [DS9] | |
| Odo. (arboretum) | 016.2C.[E | Search, The, Part I. [DS9] | |
| Odo. (archways) | 016.2C.[F | Behind the Lines. [DS9] | |
| Odo. (avoiding injuries) | 016.2C.[G.a | Emissary, Parts I & II. [DS9] | |
| Odo. (avoiding injuries) | 016.2C.[G.b | Abandoned, The. [DS9] | |
| Odo. (bag) | 016.2C.[H.a | Emissary, Parts I & II. [DS9] | |
| Odo. (bag) | 016.2C.[H.b | Second Skin. [DS9] | |
| Odo. (bag) | 016.2C.[H.c | Hippocratic Oath. [DS9] | |
| Odo. (bag) | 016.2C.[H.d | To the Death. [DS9] | |
| * | Odo. (bar trick) | 016.2C.[I | Badda-Bing, Badda-Bang. [DS9] |
| Odo. (bark) | 016.2C.[J | Behind the Lines. [DS9] | |
| Odo. (barrels) | 016.2C.[K | Sound of Her Voice, The. [DS9] | |
| Odo. (Best man) | 058.074[A | Muse, The. [DS9] | |
| Odo. (Between the lines) | 019.16[A.a | Search, The, Part I. [DS9] | |
| Odo. (bird) | 016.2D.[A.a | Way of the Warrior, The, Parts I & II. [DS9] | |
| Odo. (blanket) | 016.2D.[B | Muse, The. [DS9] | |
| Odo. (Blood on his hands) | 043APP2F[A | Things Past. [DS9] | |
| Odo. (brakes) | 016.2D.[C | Crossfire. [DS9] | |
| Odo. (branches) | 016.2D.[D | Behind the Lines. [DS9] | |
| Odo. (bread) | 016.2D.[E | Shadowplay. [DS9] | |
| Odo. (briefcase) | 016.2D.[F | Homefront. [DS9] | |
| Odo. (Cardassian turbolifts) | 016.2J.[J.a | Forsaken, The. [DS9] | |
| Odo. (Cardassian turbolifts) | 016.2J.[J.b | Civil Defense. [DS9] | |
| Odo. (chair) | 016.2D.[H.a | Man Alone, A. [DS9] | |
| Odo. (chair) | 016.2D.[H.b | Forsaken, The. [DS9] | |
| Odo. (chair) | 016.2D.[H.c | Ascent, The. [DS9] | |
| * | Odo. (Changeling assistance) | 013.06A[B | When It Rains... [DS9] |
| Odo. (changing clothes) | 016.2D.[I.a | Facets. [DS9] | |
| Odo. (changing clothes) | 016.2D.[I.b | His Way. [DS9] | |
| * | Odo. (changing clothes) | 016.2D.[I.c | When It Rains... [DS9] |
| Odo. (Changing views) | 043APP2E[A.a | Begotten, The. [DS9] | |
| Odo. (Children of time) | 018APP3[B.b | Children of Time. [DS9] | |
| Odo. (coffee) | 016.2D.[K | Behind the Lines. [DS9] | |
| Odo. (computer) | 016.2D.[L | Homefront. [DS9] | |
| Odo. (cone) | 016.2D.[M | Behind the Lines. [DS9] | |
| Odo. (container label) | 016.2D.[N | Circle, The. [DS9] | |
| Odo. (Criminal Activity Reports) | 083.20V | Heart of Stone. [DS9] | |
| Odo. (crystal) | 016.2E.[B.b | Abandoned, The. [DS9] | |
| Odo. (cube) | 016.2E.[C | Begotten, The. [DS9] | |
| Odo. (cushion) | 016.2E.[D | Way of the Warrior, The, Parts I & II. [DS9] | |
| Odo. (Deeper understanding) | 016.2[B | Search, The, Part II. [DS9] | |
| * | Odo. (Disease carrier) | 043APP2G[A | When It Rains... [DS9] |
| Odo. (dog) | 016.2E.[F | Little Green Men. [DS9] | |
| Odo. (drinking glass) | 016.2E.[H.a | Vortex. [DS9] | |
| Odo. (drinking glass) | 016.2E.[H.b | Way of the Warrior, The, Parts I & II. [DS9] | |
| Odo. (eating) | 016.2J.[L.a | Meridian. [DS9] | |
| Odo. (eating) | 016.2J.[L.b | Facets. [DS9] | |
| Odo. (False hope) | 018.097[B | Vortex. [DS9] | |
| Odo. (Ferengi advice) | 043APP2H[A.a | Shakaar. [DS9] | |
| Odo. (Ferengi advice) | 043APP2H[A.b | Sound of Her Voice, The. [DS9] | |
| Odo. (Finding form) | 043APP2[A | Begotten, The. [DS9] | |
| * | Odo. (Fire and ice) | 066.33[A.b | Chimera. [DS9] |
| Odo. (flowers) | 016.2E.[L | Search, The, Part I. [DS9] | |
| Odo. (form holding) | 016.2J.[M | Broken Link. [DS9] | |
| Odo. (gelatinous state) | 087.04AB | Emissary, Parts I & II. [DS9] | |
| Odo. (glass tubes) | 016.2F.[C | Facets. [DS9] | |
| Odo. (hairstyles) | 016.2F.[E.a | Forsaken, The. [DS9] | |
| Odo. (hairstyles) | 016.2F.[E.b | Facets. [DS9] | |
| * | Odo. (handcuffs) | 016.2F.[F | Tacking into the Wind. [DS9] |
| Odo. (horn ornament) | 016.2F.[H | Muse, The. [DS9] | |
| Odo. (host) | 016.2F.[I.a | Facets. [DS9] | |
| Odo. (life as a solid) | 043APP2C | ||
| * | Odo. (lights) | 016.2G.[A | Chimera. [DS9] |
| Odo. (Love and destiny) | 010.11[A.b | His Way. [DS9] | |
| Odo. (Love or hate?) | 051.01C[A.b | Ascent, The. [DS9] | |
| Odo. (manhunt pool) | 093.04C | Crossfire. [DS9] | |
| Odo. (manhunt pool) (games and sports. SEE:) | 087.02Z.c | Crossfire. [DS9] | |
| Odo. (massage blanket) | 016.2G.[D | Chrysalis. [DS9] | |
| Odo. (Odo's exile) | 016.2A[B | Broken Link. [DS9] | |
| Odo. (on Terok Nor) | 043APP2F | ||
| Odo. (paads) | 016.2G.[F | Homefront. [DS9] | |
| Odo. (painting) | 016.2G.[G | Captive Pursuit. [DS9] | |
| Odo. (piano playing) | 070.138-a | His Way. [DS9] | |
| Odo. (plant) | 016.2G.[H | Homefront. [DS9] | |
| Odo. (Powers restored) | 043APP2C[A | Begotten, The. [DS9] | |
| Odo. (prosthetics and plastic surgery) | 066.15.k | Apocalypse Rising. [DS9] | |
| Odo. (quantum fluctuations) | 016.2J.[O | Children of Time. [DS9] | |
| Odo. (quantum stasis box) | 066.40. | Invasive Procedures. [DS9] | |
| Odo. (quarters) | 027.05A | ||
| Odo. (rat) | 016.2G.[L | Past Prologue. [DS9] | |
| Odo. (razor cat) | 016.2G.[M | Forsaken, The. [DS9] | |
| Odo. (Revealing love) | 047.01K[A.b | His Way. [DS9] | |
| Odo. (rosetta stone) | 016.2G.[N | Way of the Warrior, The, Parts I & II. [DS9] | |
| Odo. (sculptures) | 016.2H.[A.a | Abandoned, The. [DS9] | |
| Odo. (sculptures) | 016.2H.[A.b | Simple Investigation, A. [DS9] | |
| Odo. (seagull) | 016.2H.[B | Homefront. [DS9] | |
| Odo. (Security chief) | 027.02[B | Emissary, Parts I & II. [DS9] | |
| Odo. (security chief) | 043APP2A | ||
| Odo. (sex) | 016.2H.[D | Simple Investigation, A. [DS9] | |
| Odo. (Shapeshifting) | 043APP2A[A | Emissary, Parts I & II. [DS9] | |
| Odo. (shell) | 016.2H.[E | In Purgatory's Shadow. [DS9] | |
| Odo. (shelter) | 016.2H.[F | Heart of Stone. [DS9] | |
| Odo. (spinning top) | 016.2H.[I | Shadowplay. [DS9] | |
| Odo. (squeezing through gaps) | 016.2H.[K | Nagus, The. [DS9] | |
| Odo. (Starfleet friend) | 070.058-a | Visionary. [DS9] | |
| Odo. (Starfleet personnel appendix) | 043APP1.b | Emissary, Parts I & II. [DS9] | |
| Odo. (stasis) | 016.2J.[P | Invasive Procedures. [DS9] | |
| Odo. (stones and rocks) | 016.2H.[L | Behind the Lines. [DS9] | |
| * | Odo. (suitcase) | 016.2H.[M | Badda-Bing, Badda-Bang. [DS9] |
| Odo. (surgical alterations) | 066.15C.[I.d | Apocalypse Rising. [DS9] | |
| Odo. (table) | 016.2I.[C | Crossfire. [DS9] | |
| Odo. (telepathy) | 016.2I.[D.a | Things Past. [DS9] | |
| Odo. (telepathy) | 016.2I.[D.b | Homefront. [DS9] | |
| Odo. (tentacle) | 016.2I.[F.a | Maquis, The, Part II. [DS9] | |
| Odo. (tentacle) | 016.2I.[F.c | Way of the Warrior, The, Parts I & II. [DS9] | |
| Odo. (tentacle) | 016.2I.[F.d | To the Death. [DS9] | |
| Odo. (tentacle) | 016.2I.[F.f | Begotten, The. [DS9] | |
| Odo. (the people of Gaia) | 018APP3A.[H | Children of Time. [DS9] | |
| Odo. (tire) | 016.2J.[A | Little Green Men. [DS9] | |
| * | Odo. (tray) | 016.2I.[G | Badda-Bing, Badda-Bang. [DS9] |
| Odo. (tricorder) | 016.2I.[I | Homefront. [DS9] | |
| Odo. (tripwire) | 016.2I.[J | Siege, The. [DS9] | |
| Odo. (trolley) | 016.2I.[K.a | Babel. [DS9] | |
| Odo. (trolley) | 016.2I.[K.b | Invasive Procedures. [DS9] | |
| * | Odo. (unspecified) | 016.2J.[F | Penumbra. [DS9] |
| Odo. (vase) | 016.2J.[B.b | Crossfire. [DS9] | |
| Odo. (Visitations) | 018.056[A.c | If Wishes Were Horses. [DS9] | |
| Odo. (walls) | 016.2J.[E | Siege, The. [DS9] | |
| Odo. (Well-meaning advice) | 043APP2B[A.a | Shakaar. [DS9] | |
| Odo. (Well-meaning advice) | 043APP2B[A.b | Muse, The. [DS9] | |
| Odona. | 095.2M | Mark of Gideon, The. [TOS] | |
| Odona. (Facing death) | 018.136[B.b | Mark of Gideon, The. [TOS] | |
| Odyssey, U.S.S." | 031.09A | Jem'Hadar, The. [DS9] | |
| Odyssey, U.S.S." | 095.2N | Jem'Hadar, The. [DS9] | |
| Odyssey, U.S.S." (The Dominion on the offensive) | 016.6[A.c | Jem'Hadar, The. [DS9] | |
| Off-Zel, Mark. | 095.2O | Most Toys, The. [TNG] | |
| Offenhouse, Ralph. | 095.2P | Neutral Zone, The. [TNG] | |
| Officer Exchange Program. | 095.2Q | Matter of Honor, A. [TNG] | |
| Officer Exchange Program. (Future allies) | 011.30[B.b | Matter of Honor, A. [TNG] | |
| Ogat Training Academy. | 095.2R | Firstborn. [TNG] | |
| Ogawa, Nurse Alyssa. | 025.34C.[AE | Future Imperfect. [TNG] | |
| Ogawa, Nurse Alyssa. | 026.16.[Q | Star Trek: First Contact. | |
| Ogawa, Nurse Alyssa. | 043.038. | Future Imperfect. [TNG] | |
| Ogawa, Nurse Alyssa. | 095.2S | Future Imperfect. [TNG] | |
| Ogla. SEE: Kazon-Ogla. | 095.7E | ||
| Oglamar. SEE: Kazon-Oglamar. | 095.7F | ||
| Ogre of Fire. | 095.2T | Once Upon a Time. [VGR] | |
| Ogre of Fire. (Flotter and friends) | 029.11B[A.c | Once Upon a Time. [VGR] | |
| Ogus II. | 003.3X.[J | Brothers. [TNG] | |
| Ogus II. | 095.2U | Brothers. [TNG] | |
| Oguy Jel. | 095.2V | Crossfire. [DS9] | |
| Oguy Jel. (sanitation duty) | 099.21J | Crossfire. [DS9] | |
| Ohn-Kor. | 095.2W | Attached. [TNG] | |
| Ohniaka III. | 003.3X.[K | Descent, Part I. [TNG] | |
| Ohniaka III. (illumination) | 004.36-a | Descent, Part I. [TNG] | |
| Ohniaka III. | 004.36. | Descent, Part I. [TNG] | |
| Ohniaka III. | 059.02K.[F | Descent, Part I. [TNG] | |
| Ohniaka III. | 095.2X | Descent, Part I. [TNG] | |
| Ohniaka III. (Federation outposts) | 007.14A.o | Descent, Part I. [TNG] | |
| Ohniaka III. (Tempting target) | 004.36[A | Descent, Part I. [TNG] | |
| Oji. | 095.2Y | Who Watches the Watchers? [TNG] | |
| OK Corral. | 095.2Z | Spectre of the Gun. [TOS] | |
| OK Corral. (Gunfight at OK Corral revisited) | 018.115[A | Spectre of the Gun. [TOS] | |
| Okala. | 095.2AA | Things Past. [DS9] | |
| Okalar. | 095.3A | Abandoned, The. [DS9] | |
| * | Okaro. | 095.8A | Endgame. [VGR] |
| Okinawa, U.S.S." | 095.3B | Homefront. [DS9] | |
| Okona, Thadiun. | 058.119. | Outrageous Okona, The. [TNG] | |
| Okona, Thadiun. | 095.3C | Outrageous Okona, The. [TNG] | |
| Okona, Thadiun. (First Impressions) | 058.119[A | Outrageous Okona, The. [TNG] | |
| Old Ones. [1] | 018.039. | What Are Little Girls Made Of? [TOS] | |
| Old Ones. [1] | 095.3E | What Are Little Girls Made Of? [TOS] | |
| Old Ones. [1] (galactic archeology) | 006.1.aa | What Are Little Girls Made Of? [TOS] | |
| Old Ones. [2] | 095.3F | Catspaw. [TOS] | |
| * | Olian guava. | 095.8B | Void, The. [VGR] |
| olivine. | 095.3H | Rise. [VGR] | |
| * | Olmec figurine. | 095.3I | Think Tank. [VGR] |
| Olmerak. | 095.3J | Treachery, Faith and the Great River. [DS9] | |
| Olympia, U.S.S." | 095.3L | Sound of Her Voice, The. [DS9] | |
| Omag's girls. | 095.3M.b | Unification, Part II. [TNG] | |
| Omag. | 095.3M.a | Unification, Part II. [TNG] | |
| Omaha Air Base. (air police sergeant) | 081.02L.b | Tomorrow Is Yesterday. [TOS] | |
| Omaha Air Base. (away missions) | 019.25.m | Tomorrow Is Yesterday. [TOS] | |
| Omaha Air Base. (Fellini, Colonel) | 086.03A.b | Tomorrow Is Yesterday. [TOS] | |
| * | Omara s'alas. | 095.7G | Lineage. [VGR] |
| Omarion Nebula. | 016.2A-a | Search, The, Part I. [DS9] | |
| Omarion Nebula. | 095.3N | Search, The, Part I. [DS9] | |
| Omarion Nebula. (abandoned outposts) | 004.07.f | Search, The, Part I. [DS9] | |
| Omarion Nebula. (Cloaked conditions) | 005.05[A.c | Search, The, Part I. [DS9] | |
| Omarion Nebula. (The Founder's planet) | 016.1[A | Search, The, Part I. [DS9] | |
| Omega Directive, The. (moon) | 003.6G.[A | Omega Directive, The. [VGR] | |
| Omega Directive, The. (race and research station) | 018.189. | Omega Directive, The. [VGR] | |
| Omega Directive, The. (rescue ship) | 040.077. | Omega Directive, The. [VGR] | |
| Omega Directive, The. (rescue ship) | 040APP2K.[A | Omega Directive, The. [VGR] | |
| Omega Directive. | 095.3P | Omega Directive, The. [VGR] | |
| Omega Directive. (Classified) | 018.189[A | Omega Directive, The. [VGR] | |
| Omega Directive. (Secret orders) | 005.21[A | Omega Directive, The. [VGR] | |
| Omega IV. | 003.3X.[L | Omega Glory, The. [TOS] | |
| Omega IV. | 018.189-c | Omega Glory, The. [TOS] | |
| Omega IV. | 068.42-a3 | Omega Glory, The. [TOS] | |
| Omega IV. | 095.3O | Omega Glory, The. [TOS] | |
| Omega IV. (Alpha quadrant) (Worlds) | 003.2A[A.b | Omega Glory, The. [TOS] | |
| Omega IV. (atmosphere) | 018.022-b | Omega Glory, The. [TOS] | |
| Omega IV. (Chemical warfare) | 018.059A[B.a | Omega Glory, The. [TOS] | |
| Omega IV. (culture) | 018.079-b | Omega Glory, The. [TOS] | |
| Omega molecule. | 005.21. | Omega Directive, The. [VGR] | |
| Omega molecule. | 005.21-a | Omega Directive, The. [VGR] | |
| Omega molecule. | 071.086-a | Omega Directive, The. [VGR] | |
| Omega particle. | 018.189-b | ||
| Omega Sagitta system. | 095.3Q | Outrageous Okona, The. [TNG] | |
| Omega Sector. | 095.3R | Gift, The. [VGR] | |
| omega. | 018.189-a | ||
| Omekla III. | 003.3X.[M | Defiant. [DS9] | |
| Omekla III. | 095.3S | Defiant. [DS9] | |
| Omet'iklan. | 070.089-a | To the Death. [DS9] | |
| Omet'iklan. | 095.3T | To the Death. [DS9] | |
| Omicron Ceti III. | 003.3X.[N | This Side of Paradise. [TOS] | |
| Omicron Ceti III. | 007.05F | This Side of Paradise. [TOS] | |
| Omicron Ceti III. | 095.3V | This Side of Paradise. [TOS] | |
| Omicron Ceti III. (abandoned outposts) | 004.07.b | This Side of Paradise. [TOS] | |
| Omicron Ceti III. (colonies on hostile worlds) | 004.01A.e | This Side of Paradise. [TOS] | |
| Omicron Ceti III. (Comfort and practicality) | 007.19A[A.b | This Side of Paradise. [TOS] | |
| Omicron Delta region. | 095.3W | Shore Leave. [TOS] | |
| Omicron IV. | 003.3Y.[A | Assignment: Earth. [TOS] | |
| Omicron IV. | 095.3U | Assignment: Earth. [TOS] | |
| omicron particles. | 018.119-a | Nemesis. [VGR] | |
| omicron particles. | 095.3X | Shadowplay. [DS9] | |
| Omicron Theta. | 003.3Y.[B | Datalore. [TNG] | |
| Omicron Theta. | 007.05A | Datalore. [TNG] | |
| Omicron Theta. | 007.14-c1 | Datalore. [TNG] | |
| Omicron Theta. | 095.3Y | Datalore. [TNG] | |
| Omicron Theta. (abandoned outposts) | 004.07.g | Datalore. [TNG] | |
| Omicron Theta. (Colonizing far-flung worlds) | 004.37[B.c | Datalore. [TNG] | |
| Omicron Theta. (Encounters with the entity) | 005.07[B.a | Datalore. [TNG] | |
| * | Omond, Tessa. | 043.089. | Timeless. [VGR] |
| * | Omond, Tessa. | 095.3Z | Timeless. [VGR] |
| * | Omond, Tessa. (Different lives) | 005.29H[A.c | Timeless. [VGR] |
| Onara. | 095.3AA | Accession. [DS9] | |
| Onaya. | 058.049. | Muse, The. [DS9] | |
| Onaya. | 095.3AB | Muse, The. [DS9] | |
| Onaya. (noncorporeal life) | 018.001B.j | Muse, The. [DS9] | |
| Onaya. (sentient Terrans) | 007APP1.c | Muse, The. [DS9] | |
| Once Upon a Time. (planet) | 003.6G.[D | Once Upon a Time. [VGR] | |
| One moon circles. | 095.3AC | Night Terrors. [TNG] | |
| One, The. | 095.3AF | Descent, Part I. [TNG] | |
| One. [1] | 095.3AD | Way to Eden, The. [TOS] | |
| One. [2] | 029.43E.[J | Drone. [VGR] | |
| One. [2] | 052.5. | Drone. [VGR] | |
| One. [2] | 095.3AE | Drone. [VGR] | |
| One. [2] (index, 29th-c) | 001.090.[F | Drone. [VGR] | |
| One. [2] (internal transporter nodes) | 089.08V | Drone. [VGR] | |
| * | Onella. | 095.8C | Repentance. [VGR] |
| Ongilin caviar. | 095.4A | Genesis. [TNG] | |
| Onias Sector. | 095.4B | Future Imperfect. [TNG] | |
| Onias Sector. (Alpha Onias) | 003.7.[F | Future Imperfect. [TNG] | |
| onion rings. (food. SEE:) | 086.07G.bi | Chute, The. [VGR] | |
| Onizuka, Shuttlepod." | 095.4C | Ensigns of Command, The. [TNG] | |
| onkian. | 095.4D | Defector, The. [TNG] | |
| onkian. (Romulan units) | 003.1A[F.c | Defector, The. [TNG] | |
| onlies. | 068.11-a2 | Miri. [TOS] | |
| onlies. | 095.4E | Miri. [TOS] | |
| * | Onquanii. | 095.4F | Warhead. [VGR] |
| * | Onquanii. (vessel) | 040APP2Q.[A | Warhead. [VGR] |
| Oo-mox for Fun and Profit. | 095.4G.b | Profit and Lace. [DS9] | |
| oo-mox. | 095.4G.a | Menage a Troi. [TNG] | |
| Oort cloud. | 095.4I | Maquis, The, Part II. [DS9] | |
| Opaka, Kai. | 010.03C-b | Emissary, Parts I & II. [DS9] | |
| Opaka, Kai. | 010.07-b | Emissary, Parts I & II. [DS9] | |
| Opaka, Kai. | 018.075-b | Battle Lines. [DS9] | |
| Opaka, Kai. | 047.04. | Emissary, Parts I & II. [DS9] | |
| Opaka, Kai. | 095.4J | Emissary, Parts I & II. [DS9] | |
| Opaka, Kai. (Amazing rebirth) | 018.075[B.c | Battle Lines. [DS9] | |
| Opaka, Kai. (Cardassian raiders) | 010.03F[A | Emissary, Parts I & II. [DS9] | |
| Opaka, Kai. (Heavy loss) | 043.045D[A | Battle Lines. [DS9] | |
| Opaka, Kai. (K O. SEE: O, K) | 091.02G | Emissary, Parts I & II. [DS9] | |
| Opaka, Kai. (Spirit lives on) | 047.04[A | Accession. [DS9] | |
| Open Sky. | 007.07-a | Chute, The. [VGR] | |
| Open Sky. | 007.23.[H | Chute, The. [VGR] | |
| Open Sky. | 095.4K | Chute, The. [VGR] | |
| Open Sky. (Moving towards civil war) | 018.105[B | Chute, The. [VGR] | |
| Operation Retrieve. | 095.4L | Star Trek VI: The Undiscovered Country. | |
| * | Operation Watson. (W, O) | 103.6C | Author, Author! [VGR] |
| Operations Center. | 095.4M | Emissary, Parts I & II. [DS9] | |
| Operations Center. (Deep Space 9) | 027.04. | Emissary, Parts I & II. [DS9] | |
| Operations Center. (Deep Space 9) (operations table) | 027.04A | Emissary, Parts I & II. [DS9] | |
| operations manager. (duties and role) | 019.14I | ||
| operations manager. (Enterprise-D, U.S.S.") | 025.05B | ||
| operations manager. (Voyager, U.S.S.") | 029.06D | ||
| ophidian. | 095.4N | Time's Arrow, Part I. [TNG] | |
| ophidian. (neural strands) | 018.072-b | Time's Arrow, Part I. [TNG] | |
| ophidian. (The ophidian) | 018.072[A | Time's Arrow, Part I. [TNG] | |
| ophidian. (time-travel devices) | 066.09.k | Time's Arrow, Part I. [TNG] | |
| Ophiucus III. | 003.3Y.[C | Mudd's Women. [TOS] | |
| Ophiucus III. | 095.4O | Mudd's Women. [TOS] | |
| * | Oprelian amoeba. | 095.8D | Q2. [VGR] |
| ops. (O. SEE: Operations) | 095.4P | Emissary, Parts I & II. [DS9] | |
| opti-cable. | 095.4Q | Peak Performance. [TNG] | |
| optical transducer. | 095.4R | Starship Mine. [TNG] | |
| optolythic data rod. | 095.4S | In the Pale Moonlight. [DS9] | |
| optolythic data rod. (data retrieval systems) | 059.11G.f | In the Pale Moonlight. [DS9] | |
| optolythic data rod. (The data that never lies...) | 059.11D[A | In the Pale Moonlight. [DS9] | |
| optronic datacore. | 095.4T.a | Killing Game, The, Part II. [VGR] | |
| Oracle. | 006.4.[B | For the World Is Hollow and I Have Touched the Sky. [TOS] | |
| Oracle. | 040.003A | For the World Is Hollow and I Have Touched the Sky. [TOS] | |
| Oracle. | 095.4U | For the World Is Hollow and I Have Touched the Sky. [TOS] | |
| Oracle. (index, r) | 001.076.[F | For the World Is Hollow and I Have Touched the Sky. [TOS] | |
| Oracle. (Instrument of obedience) | 018.065[B | For the World Is Hollow and I Have Touched the Sky. [TOS] | |
| * | Oram, Vedek. | 010.21.[F | Penumbra. [DS9] |
| * | Oram, Vedek. | 095.4W | Penumbra. [DS9] |
| * | Orantho." | 034.01H.[I | Once More Unto the Breach. [DS9] |
| * | Orantho." | 095.4X | Once More Unto the Breach. [DS9] |
| Orb of Change. SEE: Orb of Prophecy. | 095.4Z | ||
| Orb of Contemplation. | 010.20.[C | Tears of the Prophets. [DS9] | |
| Orb of Prophecy. | 010.06A-a | Circle, The. [DS9] | |
| Orb of Prophecy. | 010.20.[B | Circle, The. [DS9] | |
| Orb of Prophecy. | 095.4AB | Circle, The. [DS9] | |
| Orb of Prophecy. (New prophecies) | 010.16[B | Rapture. [DS9] | |
| Orb of Prophecy. (The Orb of Change and Prophecy) | 010.03[A | Circle, The. [DS9] | |
| Orb of the Emissary. | 010.20.[E | Image in the Sand. [DS9] | |
| Orb of the Emissary. | 095.4AA | Image in the Sand. [DS9] | |
| Orb of the Emissary. (E, O o. SEE O o t E) | 085.11C | Image in the Sand. [DS9] | |
| Orb of Time. | 010.20.[D | Trials and Tribble-ations. [DS9] | |
| Orb of Time. | 095.4AC | Trials and Tribble-ations. [DS9] | |
| Orb of Time. (index, t t) | 001.077.[O | Trials and Tribble-ations. [DS9] | |
| Orb of Time. (Changing times) | 005.29[B.a | Trials and Tribble-ations. [DS9] | |
| Orb of Time. (Non-linear existence) | 010APP1[A.b | Trials and Tribble-ations. [DS9] | |
| Orb of Time. (time-travel devices) | 066.09.i | Trials and Tribble-ations. [DS9] | |
| Orb of Wisdom. | 010.20.[A | Prophet Motive. [DS9] | |
| Orb of Wisdom. | 095.4AD | Prophet Motive. [DS9] | |
| Orb of Wisdom. (Bajoran shrine) | 082.01W | Prophet Motive. [DS9] | |
| Orb Shadow. | 095.4Y.b | Accession. [DS9] | |
| Orb. | 066.58. | Emissary, Parts I & II. [DS9] | |
| Orb. | 010.04-c | Emissary, Parts I & II. [DS9] | |
| Orb. | 095.4Y.a | Emissary, Parts I & II. [DS9] | |
| Orb. (T'fan) | 100.01D | Resurrection. [DS9] | |
| * | Orbital inspection pod. | 095.8E | Broken Bow, Parts I & II. [ENT] |
| orbital office complex. | 032.12. | Star Trek: The Motion Picture. | |
| * | Orbital One." | 040.085. | Blink of an Eye. [VGR] |
| * | Orbital One." | 040APP2S.[D | Blink of an Eye. [VGR] |
| * | Orbital One." (interior) | 040.085A | Blink of an Eye. [VGR] |
| orbital skydiving. | 059.02K.[H | Extreme Risk. [VGR] | |
| orbital skydiving. | 095.5B | Extreme Risk. [VGR] | |
| orbital skydiving. (Extreme risk) | 059.02C[A | Extreme Risk. [VGR] | |
| orbital skydiving. (suit) | 059.16. | Extreme Risk. [VGR] | |
| orbital tether. | 040.036. | Rise. [VGR] | |
| orbital tether. | 040APP2E.[E | Rise. [VGR] | |
| orbital tether. | 095.5C | Rise. [VGR] | |
| orbital tether. (interior) | 040.036A | Rise. [VGR] | |
| orbital tether. (Nezu technology) | 018.077[A | Rise. [VGR] | |
| orbital weapon platform. | 036.09. | Tears of the Prophets. [DS9] | |
| orbital weapon platform. | 095.5D | Tears of the Prophets. [DS9] | |
| * | Ord'Mirit Mining Treaty. | 018.130-b | Course: Oblivion. [VGR] |
| * | Ord'Mirit Mining Treaty. | 095.5E | Course: Oblivion. [VGR] |
| * | Ord'Mirit mining vessel. | 040.099. | Course: Oblivion. [VGR] |
| Ordek Nebula. | 095.5F | Allegiance. [TNG] | |
| \ | Orega, Stan. | 095.5H | Outrageous Okona, The. [TNG] |
| * | Orek, Mr. | 095.7H | Live Fast and Prosper. [VGR] |
| * | Orek, Mr. (ship) | 040APP2T.[H | Live Fast and Prosper. [VGR] |
| Orelious IX. | 003.3Y.[D | Booby Trap. [TNG] | |
| Orelious IX. | 095.5I | Booby Trap. [TNG] | |
| Orellius Minor. | 003.7D.[N | Paradise. [DS9] | |
| Orellius Minor. | 095.7I | Paradise. [DS9] | |
| Orellius Minor. (F-type star) | 086.10A | Paradise. [DS9] | |
| Orellius. | 003.3Y.[E | Paradise. [DS9] | |
| Orellius. | 004.14. | Paradise. [DS9] | |
| Orellius. | 095.5J | Paradise. [DS9] | |
| Orellius. (community) | 004.14-b | Paradise. [DS9] | |
| Orellius. (Meg) | 093.17R | Paradise. [DS9] | |
| Orellius. (Self-governing communities) | 007.14[A.b | Paradise. [DS9] | |
| Orellius. (unreplicated food) | 004.14-a | Paradise. [DS9] | |
| * | Orendal V. | 095.7J | Survival Instinct. [VGR] |
| Organia. | 003.3Y.[F | Errand of Mercy. [TOS] | |
| Organia. | 095.5L.a | Errand of Mercy. [TOS] | |
| Organia. (Idyllic world) | 018.014[A | Errand of Mercy. [TOS] | |
| Organia. (Regional power) | 011.13[B.a | Errand of Mercy. [TOS] | |
| Organian Peace Treaty. | 007.16A-a | Errand of Mercy. [TOS] | |
| Organian Peace Treaty. (First steps towards lasting peace) | 018.014[B | Errand of Mercy. [TOS] | |
| Organian Peace Treaty. (Future enemies) | 011.30[A.c | Errand of Mercy. [TOS] | |
| Organian Peace Treaty. (Peace with the Klingons) | 007.06[A.a | Errand of Mercy. [TOS] | |
| Organians. | 005.18-c3 | Errand of Mercy. [TOS] | |
| Organians. | 018.014. | Errand of Mercy. [TOS] | |
| Organians. | 018.027-a2 | Errand of Mercy. [TOS] | |
| Organians. | 095.5L.b | Errand of Mercy. [TOS] | |
| Organians. (index, i c) | 001.088.[C | Errand of Mercy. [TOS] | |
| Organians. (index, nc b) | 001.072.[B | Errand of Mercy. [TOS] | |
| Organians. (Incorporeality) | 058.076[A | Errand of Mercy. [TOS] | |
| Organians. (lighting) | 018.014-a | Errand of Mercy. [TOS] | |
| Organians. (noncorporeal life) | 018.001B.c | Errand of Mercy. [TOS] | |
| Organians. (omnipotent beings) | 057.01.l | Errand of Mercy. [TOS] | |
| * | organics. | 095.7K | Flesh and Blood, Part I. [VGR] |
| Orias III. | 003.3Y.[G | Defiant. [DS9] | |
| Orias III. | 013.14-a | Defiant. [DS9] | |
| Orias III. | 095.5M.a | Defiant. [DS9] | |
| Orias system. | 003.7E.[A | Defiant. [DS9] | |
| Orias system. | 095.5M.b | Defiant. [DS9] | |
| Orient Express. | 059.02K.[J | Emergence. [TNG] | |
| Orient Express. | 095.5N | Emergence. [TNG] | |
| Orillian lung maggot. | 095.5O | Fair Trade. [VGR] | |
| Orinoco, U.S.S." | 027.13.[C | Siege, The. [DS9] | |
| Orinoco, U.S.S." (ejection system) | 085.02V | Our Man Bashir. [DS9] | |
| Orinoco, U.S.S." (magnetic interlocks) | 093.02Q | Our Man Bashir. [DS9] | |
| Orinoco, U.S.S." (plasma coil) | 096.08L.b | Our Man Bashir. [DS9] | |
| Orion animal women. | 059.02K.[K | Begotten, The. [DS9] | |
| Orion animal women. | 095.5P.b | Cage, The. [TOS] | |
| Orion animal women. (other characters and life forms) | 058.001.l | Cage, The. [TOS] | |
| * | Orion I. | 095.7M | Good Shepherd. [VGR] |
| * | Orion III. | 095.5Q | Fight, The. [VGR] |
| Orion Syndicate. | 018.110. | Ascent, The. [DS9] | |
| Orion Syndicate. | 095.5S | Ascent, The. [DS9] | |
| Orion Syndicate. (index, c o) | 001.087.[D | Ascent, The. [DS9] | |
| * | Orion Syndicate. (A family affair) | 009.9[B | Prodigal Daughter. [DS9] |
| Orion Syndicate. (bomb) | 060.18. | Ascent, The. [DS9] | |
| Orion wing-slug. | 095.5T | Menage a Troi. [TNG] | |
| Orion. | 095.5P.a | Journey to Babel. [TOS] | |
| Orions. | 095.5P.c | Journey to Babel. [TOS] | |
| Orkett's disease. | 007.21B.[C | State of Flux. [VGR] | |
| Orkett's disease. | 095.5U | State of Flux. [VGR] | |
| \ | Orlando. | 029.43C.[T | Non Sequitur. [VGR] |
| \ | Orlando. | 095.5V | Non Sequitur. [VGR] |
| * | Orlitus cluster. (Oledis c) | 018.157-a1 | Child's Play. [VGR] |
| * | Orlitus cluster. | 095.7N | Child's Play. [VGR] |
| Ornara. | 003.3Z.[A | Symbiosis. [TNG] | |
| Ornara. | 095.5X | Symbiosis. [TNG] | |
| Ornarans. | 018.092.b | Symbiosis. [TNG] | |
| Ornarans. (Freighters) | 040APP1[AC | Symbiosis. [TNG] | |
| Ornarans. (Victims) | 018.092[B | Symbiosis. [TNG] | |
| Ornarans. (Wheelers and dealers) | 018.184[A.e | Symbiosis. [TNG] | |
| Ornathia resistance cell. | 095.5Y | Shakaar. [DS9] | |
| Ornathia resistance cell. (Brothers in arms) | 010.06C[B | Shakaar. [DS9] | |
| Ornithar. | 016.5-b | Search, The, Part I. [DS9] | |
| Ornithar. | 095.5Z | Search, The, Part I. [DS9] | |
| Orpax, Dr. | 095.6A | Body Parts. [DS9] | |
| * | Orpisay Nebula. | 095.7O | Child's Play. [VGR] |
| Orr. | 095.6B | Paradise Lost. [DS9] | |
| Orra, Jil. | 095.6C | Chain of Command, Part II. [TNG] | |
| Orta. | 047.20. | Ensign Ro. [TNG] | |
| Orta. | 010.18-a | Ensign Ro. [TNG] | |
| Orta. | 095.6D | Ensign Ro. [TNG] | |
| Ortakin. | 034.09.[J | Soldiers of the Empire. [DS9] | |
| Ortakin. | 095.6E | Soldiers of the Empire. [DS9] | |
| Orton, Mr. | 095.6F | Starship Mine. [TNG] | |
| Orum. | 095.6G | Unity. [VGR] | |
| \ | Osana caverns. | 095.6H | Blood Fever. [VGR] |
| Osborne, Lieutenant. [CAST] | 020.01K.[E | Taste of Armageddon, A. [TOS] | |
| * | Oshionian Prime. | 095.7P | Fury. [VGR] |
| Osinar VI. | 095.6I | Life Support. [DS9] | |
| oskoid. | 095.6J | Menage a Troi. [TNG] | |
| * | osmotic eel. | 206.002-b | Broken Bow, Parts I & II. [ENT] |
| * | osmotic eel. | 095.8F | Broken Bow, Parts I & II. [ENT] |
| osmotic pressure therapy. | 095.6K | Deadlock. [VGR] | |
| osol twist. (olso t) | 095.3K | Image in the Sand. [DS9] | |
| Ossan, Vedek. | 010.03D-a | Resurrection. [DS9] | |
| Ossan, Vedek. | 010.21.[G | Resurrection. [DS9] | |
| Ossan, Vedek. | 095.6L | Resurrection. [DS9] | |
| osteogenic stimulator. | 095.6M.a | Distant Voices. [DS9] | |
| osteotomy. | 095.6M.b | Hunters. [VGR] | |
| Otar II. | 003.3Z.[B | Offspring, The. [TNG] | |
| Otar II. | 095.6N | Offspring, The. [TNG] | |
| Otel, Jaret. | 095.6O | Prime Factors. [VGR] | |
| Otner, Dr. Bejal. | 007.24A.[D | Rejoined. [DS9] | |
| Otner, Dr. Bejal. | 095.6P | Rejoined. [DS9] | |
| Otner, Dr. Bejal. (target drone) | 100.06F | Rejoined. [DS9] | |
| * | Otrin. | 095.8G | Friendship One. [VGR] |
| * | Otrin. (Unintended effects) | 058.125[A | Friendship One. [VGR] |
| Otto. | 095.6Q | Space Seed. [TOS] | |
| oumriel. | 095.6R | Aquiel. [TNG] | |
| Outpost 23. | 069.080-a | Future Imperfect. [TNG] | |
| Outpost 23. | 095.6S.b | Future Imperfect. [TNG] | |
| Outpost 23. (Holding the line) | 007.14A[B.c | Future Imperfect. [TNG] | |
| Outpost Seran-T-One. | 095.6S.c | Booby Trap. [TNG] | |
| Outpost Seran-T-One. (Federation outposts) | 007.14A.m | Booby Trap. [TNG] | |
| Outpost Sierra VI. | 007.14A-a | Defector, The. [TNG] | |
| Outpost Sierra VI. | 095.6S.a | Defector, The. [TNG] | |
| Outpost Sierra VI. (Holding the line) | 007.14A[B.b | Defector, The. [TNG] | |
| * | Overlooker. | 095.7Q | Tinker, Tenor, Doctor, Spy. [VGR] |
| * | Overlooker. (acceptable risk - overlooker) | 018.134-b | Tinker, Tenor, Doctor, Spy. [VGR] |
| Overseer, the. | 095.6T | Who Watches the Watchers? [TNG] | |
| Overseer, the. (Letting go of the past) | 058.070[A | Who Watches the Watchers? [TNG] | |
| * | Ovions. | 071-149-b | Flesh and Blood, Part I. [VGR] |
| * | Ovions. | 095.7R | Flesh and Blood, Part I. [VGR] |
| Owon eggs. | 095.6U | Time Squared. [TNG] | |
| * | Ox and the Lamb, The. | 095.7S | Fair Haven. [VGR] |
| * | Oxilon. | 095.8H | Homestead. [VGR] |
| * | Oxilon. (Talaxians abroad) | 018.023C[B.c | Homestead. [VGR] |
| Oxmyx, Bela. | 095.6V | Piece of the Action, A. [TOS] | |
| * | oxygen refinery. | 095.6W | Thirty Days. [VGR] |
| Ozaba. | 007.24A.[E | Empath, The. [TOS] | |
| Ozaba. | 095.6Y | Empath, The. [TOS] | |
| ozone. | 069.017-a | When the Bough Breaks. [TNG] |