| olifant | elefant |
| Olifanten | Elefant |
| Olifantsgras | Elefantgræs |
| Olifantsvogels | Elefantfugl |
| Oligoceen | Oligocæn |
| olijf | oliven |
| Olijfberg | Oliebjerget |
| Olijffamilie | Oliven-familien |
| Oliver | Oliven |
| Oliver Bierhoff | Oliver Bierhoff |
| Oliver Cromwell | Oliver Cromwell |
| Oliver Hardy | Oliver Hardy |
| Oliver Heaviside | Oliver Heaviside |
| Oliver Kahn | Oliver Kahn |
| Oliver Neuville | Oliver Neuville |
| Oliver Norvelle Hardy | Oliver Norvelle Hardy |
| Oliver Riedel | Oliver Riedel |
| Oliver Stone | Oliver Stone |
| Oliverio Rincon | Oliverio Rincón |
| Olivia Newton-John | Olivia Newton-John |
| Olivier Messiaen | Olivier Messiaen |
| Olivijn | Olivin |
| Ollie | Ollie |
| olm | elm |
| Olmeken | Olmeker |
| Olof II van Zweden | Olaf |
| Olof Palme | Olof Palme |
| Olofström | Olofströms kommun |
| Olsen Brothers | Brødrene Olsen |
| Olsztyn | Olsztyn |
| Olusegun Obasanjo | Olusegun Obasanjo |
| Olympia | Olympia |
| Olympiakos Piraeus | Olympiakos |
| Olympias | Olympias |
| Olympiastadion | Olympiastadion |
| Olympic | Olympique de Marseille |
| Olympique Lyonnais | Olympique Lyonnais |
| Olympique Marseille | Olympique de Marseille |
| Olympisch Stadion | Stadio Olimpico |
| Olympisch Stadion Spyridon Louis | Olympisk stadion |
| Olympische eed | Olympisk løfte |
| Olympische Spelen | Olympiske lege |
| Olympische Spelen in de Klassieke Oudheid | Antikkens olympiske lege |
| Olympische sport | Olympiske sportsgrene |
| Olympische vlam | Olympiske ild |
| Olympische Winterspelen | Vinter-OL |
| Olympische Zomerspelen | Sommer-OL |
| Olympus | Olympen |
| Olympus Mons | Olympus Mons |
| Olza | Elleslægten |
| om | om |
| Om mani padme hum | Mani |
| om- | omkring |
| oma | bedstemor |
| Oma Duck | Bedstemor And |
| Omaha | Omaha |
| Omaha Beach | Omaha Beach |
| Omaha High | Omaha |
| Omajjaden | Ummayyaderne |
| Oman | Oman |
| Omar Bradley | Omar Bradley |
| Omar Hasan Ahmad al-Bashir | Omar al-Bashir |
| Omar ibn al-Chattab | Umar ibn al-Khattab |
| Omar Khayyám | Omar Khayyám |
| omcirkelen | omringe |
| omdat | for |
| omelet | omelet |
