| Organic Code Company | 🍎 | 1 | — | Developer Tools |
| Organic Maps | 🍎 | 1 | 4.8★ | Navigation |
| Organización Editorial Mexicana, S.A. de C.V. | 🍎 | 1 | 5.0★ | Magazines & Newspapers |
| Organizze Tecnologia LTDA | 🍎 | 1 | 4.6★ | Finance |
| Organum Limited | 🍎 | 1 | 4.2★ | Music |
| Orgo Incorporated | 🍎 | 1 | 4.7★ | Productivity |
| Oriana Isabel Leal Ramos | 🍎 | 1 | 5.0★ | Health & Fitness |
| Oribi AB | 🍎 | 1 | — | Education |
| Orienjoy International Company Limited | 🍎 | 1 | 4.7★ | Games |
| OrientSwiss SA | 🍎 | 1 | 4.3★ | Shopping |
| Oriental Huaxin Technology Co., Ltd. | 🍎 | 1 | 3.0★ | Social Networking |
| Oriental Land Co., Ltd. | 🍎 | 1 | 2.4★ | Entertainment |
| Oriented Games | 🍎 | 1 | 4.5★ | Games |
| Origin Energy | 🍎 | 1 | 5.0★ | Travel |
| Origin Financial | 🍎 | 1 | 4.6★ | Finance |
| Origin Utility | 🍎 | 1 | — | Utilities |
| Original Digital Corporation | 🍎 | 1 | — | Finance |
| Original Games Pte. Ltd. | 🍎 | 1 | 4.7★ | Games |
| Original Life,Inc. | 🍎 | 1 | 4.5★ | News |
| Oriient New Media inc. | 🍎 | 1 | 4.0★ | Navigation |
| Oringe Inc. | 🍎 | 1 | 4.9★ | Graphics & Design |
| Oriol Garcia Gomez | 🍎 | 1 | 5.0★ | Productivity |
| Oriole2 Co., Ltd. | 🍎 | 1 | 4.2★ | Photo & Video |
| Orion Beta EOOD | 🍎 | 1 | 4.9★ | Navigation |
| Orion Global Dominion FZE | 🍎 | 1 | 4.6★ | Entertainment |
| Orion Lukasz Gonerski | 🍎 | 1 | 1.0★ | Social Networking |
| Orion Pos Sistemleri Ltd Sti | 🍎 | 1 | — | Business |
| Orion Solutions D.O.O. | 🍎 | 1 | — | Health & Fitness |
| Orion Township Public Library | 🍎 | 1 | 5.0★ | Lifestyle |
| Orion180 | 🍎 | 1 | 2.8★ | Business |
| Orisma | 🍎 | 1 | — | NEWS |
| Orium Mastin | 🍎 | 1 | 4.3★ | Lifestyle |
| Orkhan Hasanbeck | 🍎 | 1 | 5.0★ | Health & Fitness |
| Orlando Pelayo | 🍎 | 1 | 1.3★ | Productivity |
| Orlando Santos | 🍎 | 1 | 4.6★ | Weather |
| Orlando alarcon | 🍎 | 1 | — | Business |
| Ornament Health AG | 🍎 | 1 | 4.6★ | Health & Fitness |
| Orodragon Ltd. | 🍎 | 1 | 4.5★ | Games |
| Ort Cloud Limited | 🍎 | 1 | 4.5★ | Games |
| OrthoPoP Inc | 🍎 | 1 | 5.0★ | Medical |
| Orthodox Church in Hong Kong 香港聖彼得聖保羅東正教堂 | 🍎 | 1 | 5.0★ | Education |
| Ortusolis Technology Services LLP | 🍎 | 1 | — | Lifestyle |
| Orube Game Studio | 🍎 | 1 | — | GAMES_ROLE_PLAYING |
| Orvin | 🍎 | 1 | 5.0★ | Business |
| Orwell Health | 🍎 | 1 | 4.5★ | Health & Fitness |
| OryxLabs | 🍎 | 1 | 3.0★ | Utilities |
| Oryxnet | 🍎 | 1 | 4.7★ | Food & Drink |
| Osagie Zogie-Odigie | 🍎 | 1 | 4.5★ | Finance |
| Osaka Convention and Tourism Bureau | 🍎 | 1 | 4.4★ | Travel |
| Osakidetza | 🍎 | 1 | 1.7★ | Medical |