| olive-tree | olivo |
| Olive-wood | Olea europaea |
| Oliveira | Olea europaea |
| Oliveira de Azeméis | Oliveira de Azeméis |
| Oliveira de Frades | Oliveira de Frades |
| Oliveira do Hospital | Oliveira do Hospital |
| Olivenza | Olivenza |
| Oliver | Oliver |
| Oliver Bierhoff | Oliver Bierhoff |
| Oliver Cromwell | Oliver Cromwell |
| Oliver Goldsmith | Oliver Goldsmith |
| Oliver Hardy | Oliver Hardy |
| Oliver Hazard Perry class frigate | Classe Oliver Hazard Perry |
| Oliver Heaviside | Oliver Heaviside |
| Oliver Hirschbiegel | Oliver Hirschbiegel |
| Oliver Joseph Lodge | Oliver Joseph Lodge |
| Oliver Kahn | Oliver Kahn |
| Oliver Neuville | Oliver Neuville |
| Oliver Norvelle Hardy | Oliver Norvelle Hardy |
| Oliver Plunkett | Oliver Plunkett |
| Oliver Riedel | Oliver Riedel |
| Oliver Sacks | Oliver Sacks |
| Oliver Smithies | Oliver Smithies |
| Oliver Stone | Oliver Stone |
| Oliver Tambo | Oliver Tambo |
| Oliver Twist | Oliver Twist |
| Olives | Olea europaea |
| Olivetans | Olivetani |
| Olivia De Berardinis | Olivia De Berardinis |
| Olivia de Havilland | Olivia de Havilland |
| Olivia Lufkin | Olivia Lufkin |
| Olivia Newton-John | Olivia Newton-John |
| Olivier | Oliver |
| Olivier Besancenot | Olivier Besancenot |
| Olivier Grouillard | Olivier Grouillard |
| Olivier Messiaen | Olivier Messiaen |
| Olivier Panis | Olivier Panis |
| Olivine | Olivina |
| Olkusz | Olkusz |
| Ollantaytambo | Ollantaytambo |
| Ollantaytambo District | Ollantaytambo |
| Ollastra Simaxis | Ollastra |
| Ollersdorf im Burgenland | Ollersdorf im Burgenland |
| Olli Rehn | Olli Rehn |
| Ollie | Ollie |
| Olliergues | Olliergues |
| Ollon | Ollon |
| Olly Barkley | Olly Barkley |
| Olmec | Olmechi |
| Olmeca | Olmechi |
| Olmstead Falls | Olmstead Falls |
| Olof Palme | Olof Palme |
| Olof Rudbeck the Younger | Olaus Rudbeck il Giovane |
| Olof Swartz | Olof Swartz |
| Olof Vilhelm Arrhenius | Olof Vilhelm Arrhenius |
| Olofström Municipality | Municipalità di Olofström |
| Olokun | Olokun |
| Olomouc | Olomouc |
| Olomouc District | Distretto di Olomouc |
| Olomouc Region | Regione di Olomouc |
| Olomouc Synagogue | Sinagoga |
| Olonets | Olonec |
| Olonets Karelian | Lingua livvi |
| Olongapo City | Olongapo |
| Olosega Island | Isola Olosega |
| Olpe | Olpe |
| Olsen Brothers | Olsen Brothers |
| Olsztyn | Olsztyn |
| Olsztyn Voivodeship | Voivodato di Olsztyn |
| Olt County | Distretto di Olt |
| Olt River | Olt |
| Oltcit | Rodae |
| Olten | Olten |
| Oltenia | Oltenia |
| Oltingen | Oltingen |
| Oltradige railroad | Ferrovia Bolzano-Caldaro |
| Olusegun Obasanjo | Olusegun Obasanjo |
| Olustee | Olustee |
| Olybrius | Anicio Olibrio |
| Olympe de Gouges | Olympe de Gouges |
| Olympia | Olimpia |
| Olympia Dukakis | Olympia Dukakis |
| Olympia Mancini | Olimpia Mancini |
| Olympiacos | Olympiakos Pireo |
| Olympiacos FC | Olympiakos Pireo |
| Olympiacos SC | Olympiakos Pireo |
| olympiad | olimpiade |
| Olympiakos | Olympiakos Pireo |
| Olympiakos Nicosia | Olympiakos Nicosia |
| Olympian | olimpico |
| Olympic | olimpico |
| Olympic Airlines | Olympic Airlines |
| Olympic Anthem | Inno olimpico |
| Olympic Flame | Fiamma olimpica |
| Olympic Games | Olimpiadi |
| Olympic Marmot | Marmota olympus |
| Olympic motto | Motto olimpico |
| Olympic National Park | Parco nazionale di Olympic |
| Olympic Oath | Giuramento olimpico |
| Olympic Peninsula | Olympique Marsiglia |
| Olympic Stadium | Stadio Olimpico di Berlino |
| Olympic symbols | Simboli olimpici |
| Olympics | Olimpiadi |
| Olympiodorus | Olimpiodoro di Tebe |
| Olympiodorus of Thebes | Olimpiodoro di Tebe |
| Olympique de Marseille | Olympique Marsiglia |
| Olympique Lyonnais | Olympique Lyonnais |
| Olympisch Stadion | Stadio Olimpico |
| Olympos | Olympos |
| Olympus | Olimpo |
| Olympus Corporation | Olympus |
| Olympus Mons | Olympus Mons |
| Olyokminsk | Olëkminsk |
| Olza River | Alnus |
| Oláibar | Olaibar |
| Oléron | Oléron |
| Olímpia | Olimpia |
| Om mani padme hum | Om mani padme hum |
| Om River | Aum |
| Omagua | Kambeba |
| Omaha | Omaha |
| Omaha Beach | Omaha Beach |
| Omaha class cruiser | Classe Omaha |
| Omake | Omake |
