| Nutrition Technologies | 🍎 | 1 | 4.9★ | Health & Fitness |
| Nutty Face s.r.o. | 🍎 | 1 | 4.4★ | Games |
| Nyllon | 🍎 | 1 | 4.8★ | Health & Fitness |
| OAK TECHNOLOGY LIMITED | 🍎 | 1 | 4.4★ | Games |
| OAZIS GAMES | 🍎 | 1 | 4.6★ | Games |
| OBD Solutions LLC | 🍎 | 1 | 4.8★ | Travel |
| OBDeleven UAB | 🍎 | 1 | 4.5★ | Utilities |
| OBLIQUE GAMES, Corp. | 🍎 | 1 | 4.7★ | Games |
| OCEAN GALAXY PTE. LTD. | 🍎 | 1 | 4.8★ | Photo & Video |
| OCTAGONLAB | 🍎 | 1 | 4.6★ | Business |
| OCTech, LLC | 🍎 | 1 | 4.7★ | GAMES |
| ODK Media Inc. | 🍎 | 1 | 2.9★ | Entertainment |
| ODYSSEY DOWNTOWN, INC. | 🍎 | 1 | 4.3★ | Entertainment |
| OFFICE ALINA AL-TAQDIM FOR ELECTRONIC SERVICES | 🍎 | 1 | 4.6★ | Business |
| OLGA NIKOLENKO | 🍎 | 1 | 4.3★ | Education |
| OMG. I Can Meditate! Inc. | 🍎 | 1 | 4.7★ | Health & Fitness |
| OMJ Holdings Pty Ltd | 🍎 | 1 | 4.7★ | Photo & Video |
| ONE App Essentials | 🍎 | 1 | 4.5★ | Utilities |
| ONE ELEVEN HOLDINGS, LLC | 🍎 | 1 | 4.5★ | Health & Fitness |
| ONE FTS PTE. LTD. | 🍎 | 1 | 4.0★ | Utilities |
| ONLAIN FITNES, OOO | 🍎 | 1 | 4.9★ | Health & Fitness |
| ONSOFFOUR OU | 🍎 | 1 | 4.5★ | Productivity |
| ONYX Apps | 🍎 | 1 | 4.7★ | Music |
| OOKBEE U COMPANY LIMITED | 🍎 | 1 | 4.5★ | Entertainment |
| OOO Zaycev.Net | 🍎 | 1 | 3.0★ | Music |
| OPCODE LABS PTE. LTD. | 🍎 | 1 | 3.3★ | Utilities |
| OPTIMUM ENDUSTRIYEL TEMIZLIK VE KIMYASAL URUNLER SANAYI TICARET ANONIM SIRKETI | 🍎 | 1 | 4.5★ | Photo & Video |
| ORBITAL POINT COMPANY FOR INFORMATION TECHNOLOGY LTD | 🍎 | 1 | 4.7★ | Navigation |
| ORBITECH PTE. LTD. | 🍎 | 1 | 4.6★ | Social Networking |
| ORCA STUDIOS PTY. LTD. | 🍎 | 1 | 4.6★ | Games |
| ORCAT PTE. LTD. | 🍎 | 1 | 4.5★ | Games |
| ORFETECH OU | 🍎 | 1 | 4.8★ | Lifestyle |
| ORGANIZEAT LTD | 🍎 | 1 | 4.8★ | FOOD_AND_DRINK |
| ORION FUTURE TECHNOLOGY LIMITED | 🍎 | 1 | 4.8★ | Games |
| ORKESTRA YAZILIM BILISIM TEKNOLOJILERI PRODUKSIYON DANISMANLIK INT HIZM LTD STI | 🍎 | 1 | 4.3★ | Games |
| OSENGO | 🍎 | 1 | 4.8★ | Health & Fitness |
| OTHINK Technology Co., Ltd. | 🍎 | 1 | 4.1★ | Photo & Video |
| OUTILS OBD FACILE SARL | 🍎 | 1 | 4.6★ | Utilities |
| OVERLAP PLUS, Inc. | 🍎 | 1 | 4.6★ | Book |
| OWL GAMES LTD | 🍎 | 1 | 4.6★ | Games |
| OZCAN ERTUN | 🍎 | 1 | 4.5★ | Photo & Video |
| OakTree Software, Inc. | 🍎 | 1 | 4.8★ | Reference |
| Oanh Hoang | 🍎 | 1 | 4.4★ | Travel |
| Oasis Games LTD | 🍎 | 1 | 4.9★ | GAMES_WORD |
| Obedience B.V. | 🍎 | 1 | 4.6★ | Lifestyle |
| Obimy inc. | 🍎 | 1 | 4.5★ | Lifestyle |
| Occipital, Inc. | 🍎 | 1 | 4.8★ | Utilities |
| Octodev Ltd | 🍎 | 1 | 4.6★ | Music |
| Oddrobo Software AB | 🍎 | 1 | 4.7★ | Education |
| Oddrok Oy | 🍎 | 1 | 4.6★ | Games |