| 1) | OBRADOVIC, Anja Powodzenia: World Championships Juniors 2019: 2. place World Championships Juniors 2018: 3. place Cadet European Championships 2017: 1. place |  | Kobieta -63 kg | Serbia (SRB) |  | 3. Miejsce |
| 2) | ODELIN GARCIA, Arnaes Powodzenia: Panamerican Senior Championhips 2021 Individuals: 1. place Panamerican Senior Championships 2020: 3. place |  | Kobieta -57 kg | Kuba (CUB) |  | | |
| 3) | OEDA, Ikumi Powodzenia: 18th Asian Games Jakarta 2018: 3. place Hong Kong Asian Open 2018: 3. place |  | Kobieta -78 kg | Tajlandia (THA) Covid-Manager |  | | |
| 4) | OH, Yeonju |  | Kobieta -48 kg | Korea Po?udnie (KOR) |  | | |
| 5) | OHAI, Loredana Powodzenia: Grand Slam Abu Dhabi 2015: 3. place Grand Slam Tyumen 2014: 3. place Grand Slam Paris 2013: 3. place |  | Kobieta -57 kg | Rumunia (ROU) |  | | |
| 6) | OLSEN, Laerke Powodzenia: World Championships Juniors 2018: 2. place Prague Junior European Cup 2018: 1. place Junior European Cup La Coruna 2016: 1. place |  | Kobieta -63 kg | Dania (DEN) |  | | |
| 7) | OLVERA, Luz Powodzenia: Cancun Grand Prix 2017: 1. place Panamerican Senior Championships 2020: 2. place Pan American Championships Senior 2017: 2. place |  | Kobieta -52 kg | Meksyk (MEX) |  | | |
| 8) | ONO, Yoko Powodzenia: Doha Masters 2021: 1. place Paris Grand Slam 2020: 1. place Osaka Grand Slam 2019: 1. place |  | Kobieta -70 kg | Japonia (JPN) |  | 2. Miejsce |
| 9) | ORTIZ, Idalys Powodzenia: World Championships Senior 2019: 2. place World Championships Seniors Baku 2018: 2. place Guangzhou Masters 2018: 2. place |  | Kobieta +78 kg | Kuba (CUB) |  | 5. Miejsce |
| 10) | OUALLAL, Kaouthar Powodzenia: African Championships Seniors 2019: 1. place African Senior Championships 2018: 1. place African Championships Seniors 2017: 1. place |  | Kobieta -78 kg | Algeria (ALG) |  | | |
| 11) | OZBAS, Szofi Powodzenia: Grand Slam Hungary 2020: 3. place World Championships Juniors 2019: 1. place European Junior Championships 2019: 1. place |  | Kobieta -63 kg | W?gry (HUN) |  | 7. Miejsce |