The "Star trek" canon concordance
Places: O is for Oats
- Oakland (USA, North America, Earth): Starfleet: (Shipyard)
- Obata Cluster (Gamma Quadrant): Location: Near Kendi System, Near Teplan System
- Oby System: (Plasma Plague)
- Office of Planetary Operations (Lisbon, Africa, Earth): Red Squad: (Sabotage planetary power system)
- OK Corral (USA, North America, Earth): Simulacrum: Melkotians: Creation
- Okinawa (Pacific Ocean, Earth): USS Okinawa: (Eponymous)
- Oklast System (Alpha Quadrant): Enoran II: Climatology: Monsoon season affects archaeological expedition
- Old Bandi City (Deneb IV): Attack: Spatial being - Farpoint Station: Adjacent - Administrator's office: Picard enters negotiations with Groppler Zorn
- Omarion Nebula (Gamma Quadrant): Planetology: Class M rogue planet: Founder homeworld; Obsidian Order and Tal Shiar: Assault
- Omega Sagitta 12 System: Spatiography: Planets: Twins: Atlek, Streleb - USS Enterprise-D: Traverse
- Omega Sector (UFP, Beta Quadrant): Remote Outpost: (USS Raven's last contact)
- Omega System (UFP): Rigellian fever: USS Enterprise Crew contracts
- Omerak System (Alpha Quadrant): Cardassian Union controls
- Omicron Pascal System: USS Enterprise-D: (Odin recovery mission)
- Omicron Seti III Colony (UFP): Colonists: (Berthold rays kill)
- Omicron Theta Colony (UFP): Destruction: (Crystalline entity) - Purpose: (Science)
- Omicron Theta System (UFP): Planetology: Planets: Omicron Theta
- Onella the mother (Constellation from Nygean space, Delta Quadrant): Iko: Surrounded by 16 smaller stars: Her daughters
- Onepherus System (Cardassian Union border, Alpha Quadrant): Jaforay II: (Enabran Tain's safe house)
- Opraline System: LaForge, Geordi: We've never been there - USS Enterprise-D: En route
- Orelious Minor System (Near Bajoran System): Planetology: Star: Binary - SS Santa Maria (Crash) - UFP: Paradise Colony
- Organ Processing (Vidiian Sodality, Delta Quadrant): Durst: (Organs extracted)
- Orias System (Cardassian Union): Obsidian Order: Control, Build illegal shipyards
- Orinoco River (Venezuela, South America, Earth): USS Orinoco: (Eponymous)
- Orion (Constellation from Earth): Third brightest star viewed from Earth: Gamma Orionis
- Orlitus Cluster (Delta Quadrant): Leucon: Shows Icheb from Brunal
- Outpost: See also Starbase
- Outpost, Cardassian Union:
- 47 (Amatha Sector): Destruction: (Maquis)
- 61 (Amatha Sector): Destruction: (Maquis)
- Outpost, Dominion: Soukara System: Jadzia and Worf: Lasaran defection; Vreenak: (Treaty discussion)
- Outpost, Haru (Bajor): Bajora: (Violent raids)
- Outpost, Klingon Empire: Khitomer: Attack: (Romulan Star Empire); Residents: (House of Mogh)
- Outpost, Korma (Cardassian Union):
- Outpost, Markonian (Delta Quadrant): USS Voyager: (Docking), Mutual visits
- Outpost, Mikhal Travellers (Delta Quadrant): EMH: Attacks Nakhan and Zahir
- Outpost MZ5: Batris: (En route)
- Outpost, Romulan Star Empire: Neutral Zone: Destruction: (Borg)
- Outpost, Son'a (Devos II, Alpha Quadrant): (Ketracel White facility)
- Outpost, UFP:
- Ox and Lamb, The: Fairhaven holoprogram: Pub; Kim 2, Harry: (Chats up Maggie)
