| Olsztyn | Olsztyn |
| Olszyna | Olszyna |
| OLT | Olt |
| Olt County | Olt |
| Oltcit | Oltcit |
| Oltingen | Oltingen |
| Oluf Haraldsen | Olof Haraldsson |
| Olusegun Obasanjo | Olusẹgun Ọbasanjọ |
| Olybrius | Olybrius |
| Olympe de Gouges | Olympe de Gouges |
| Olympia | Washington |
| Olympia Dukakis | Olympia Dukakis |
| Olympia-Stadion | Olympia-Stadion |
| Olympiacos | Olympiakos |
| Olympiacos BC | Olympiakos |
| Olympiacos FC | Olympiakos |
| Olympiacos SC | Olympiakos |
| olympiad | olympiad |
| Olympiakos | Olympiakos |
| Olympiakos Nicosia | Olympiakos Nicosia |
| Olympias | Olympias |
| Olympic | olympisk |
| Olympic Airlines | Olympic Airlines |
| Olympic Games | Olympiska Spelen |
| Olympic Peninsula | Olympique de Marseille |
| Olympic size swimming pool | Bassäng med olympiska mått |
| Olympic sport | Olympiska sporter |
| Olympic sports | Olympiska sporter |
| Olympic Stadium | Berlins Olympiastadion |
| Olympics | Olympiska spelen |
| Olympique de Marseille | Olympique de Marseille |
| Olympique Lyonnais | Olympique Lyonnais |
| Olympisch Stadion | Tokyos Olympiastadion |
| Olympos | Olympen |
| Olympus | Olympen |
| Olympus Corporation | Olympus |
| Olympus Mons | Olympus Mons |
| Olza River | Alar |
| Olímpia | Olympia |
| Om River | Aum |
| Omagh District Council | Omagh |
| Omaha | Nebraska |
| Omaha Beach | Omaha Beach |
| Oman | Oman |
| Oman Air | Gulf Air |
| Omani rial | Omansk rial |
| Omar | Omar |
| Omar al-Bashir | Omar Hassan al-Bashir |
| Omar Bongo | Omar Bongo |
| Omar Bradley | Omar Bradley |
| Omar Khayyám | Omar Khayyam |
| Omar Pène | Omar Pène |
| Omar Sharif | Omar Sharif |
| Omar Sívori | Omar Sivori |
| omasum | bladmage |
| ombudsman | ombudsman |
| ombudswoman | ombudskvinna |
| omega | omega |
| Omega constant | Omegakonstanten |
| Omega particle | Omega |
| Omega SA | Omega |
| omelet | omelett |
| omelette | omelett |
| omen | förebud |
| Omer Nishani | Omer Nishani |
| Omertà | Omertà |
| OMF International | Kinesiska inlandsmissionen |
| Omicron | Omikron |
| ominous | illavarslande |
| omission | underlåtenhet |
| Omission points | Uteslutningstecken |
| omit | hoppa över |
