| Oliveira | Oliveira |
| Oliveira da Figueira | Minor characters in The Adventures of Tintin |
| Oliveira de Azeméis | Oliveira de Azeméis |
| Oliveira de Frades | Oliveira de Frades |
| Oliveira do Hospital | Oliveira do Hospital |
| Olivenza | Olivenza |
| Oliver Barkley | Olly Barkley |
| Oliver Bierhoff | Oliver Bierhoff |
| Oliver Cromwell | Oliver Cromwell |
| Oliver Heaviside | Oliver Heaviside |
| Oliver Hirschbiegel | Oliver Hirschbiegel |
| Oliver Kahn | Oliver Kahn |
| Oliver Kovačević | Oliver Kovačević |
| Oliver Lodge | Oliver Joseph Lodge |
| Oliver Mtukudzi | Oliver Tuku Mtukudzi |
| Oliver Neuville | Oliver Neuville |
| Oliver Riedel | Oliver Riedel |
| Oliver Sacks | Oliver Sacks |
| Oliver Smithies | Oliver Smithies |
| Oliver Stone | Oliver Stone |
| Oliver Tambo | Oliver Tambo |
| Oliver Twist | Oliver Twist |
| Olivia | Olivia |
| Olivia de Havilland | Olivia de Havilland |
| Olivia Lufkin | Olivia Lufkin |
| Olivia Newton-John | Olivia Newton-John |
| Olivia Williams | Sailor Saturn |
| Olividae | Olive shell |
| olivier | olive tree |
| Olivier Besancenot | Olivier Besancenot |
| Olivier Blanchard | Olivier Blanchard |
| Olivier de la Marche | Olivier de la Marche |
| Olivier européen | Olive |
| Olivier Grouillard | Olivier Grouillard |
| Olivier IV de Clisson | Olivier de Clisson |
| Olivier Levasseur | Olivier Levasseur |
| Olivier Messiaen | Olivier Messiaen |
| Olivier odorant | Sweet Osmanthus |
| Olivier Panis | Olivier Panis |
| Olivier Plunket | Oliver Plunkett |
| Olivier Schoenfelder | Olivier Schoenfelder |
| Olivier V de Clisson | Olivier de Clisson |
| Olivier van Noort | Olivier van Noort |
| Olivine | Olivine |
| olivâtre | sallow |
| Olkiluoto | Olkiluoto Nuclear Power Plant |
| Ollantaytambo | Ollantaytambo |
| Ollastra | Ollastra Simaxis |
| Olli Jokinen | Olli Jokinen |
| Olli Rehn | Olli Rehn |
| Olli Remes | Olli Remes |
| Ollie | Ollie |
| Olliergues | Olliergues |
| Ollon | Ollon |
