Authors
| Name | First name | Last name |
|---|---|---|
| Michal Onderco | Michal | Onderco |
| Oleg Onishchenko | Oleg | Onishchenko |
| Fergus Onu | Fergus | Onu |
| Jonah Onuoha | Jonah | Onuoha |
| Justus Onyeagba | Justus | Onyeagba |
| Svitlana Onyshchenko | Svitlana | Onyshchenko |
| Svitlana Onyshchenko | Svitlana | Onyshchenko |
| Roderik Oosterholt | Roderik | Oosterholt |
| Deborah Oosting | Deborah | Oosting |
| Deborah Oosting | Deborah | Oosting |
| Andreas Opitz | Andreas | Opitz |
| Natalia Opolska | Natalia | Opolska |
| Timothy Opper | Timothy | Opper |
| Daniel Oppermann | Daniel | Oppermann |
| Oleksiy Opryshko | Oleksiy | Opryshko |
| Joel Orban | Joel | Orban |
| TP Orebiyi | TP | Orebiyi |
| AO Orebiyi | AO | Orebiyi |
| Agustin Orfila | Agustin | Orfila |
| Craig Orgeron | Craig | Orgeron |
| Mehmet Orgun | Mehmet | Orgun |
| Tetiana Orlenko | Tetiana | Orlenko |
| Amy Ormrod | Amy | Ormrod |
| David Ormrod | David | Ormrod |
| Almakan Orozobekova | Almakan | Orozobekova |
| Megan Ortagus | Megan | Ortagus |
| Daniel Ortiz-Arroyo | Daniel | Ortiz-Arroyo |
| O. Osahenvemwen | O. | Osahenvemwen |
| Jan Osburg | Jan | Osburg |
| Ararat Osipian | Ararat | Osipian |
| Noor Osmani | Noor | Osmani |
| Howard Osofsky | Howard | Osofsky |
| Joy Osofsky | Joy | Osofsky |
| Christophe Osswald | Christophe | Osswald |
| Denis Ostapec | Denis | Ostapec |
| Aaron Ostrovsky | Aaron | Ostrovsky |
| Holger Oswald | Holger | Oswald |
| Daniel Ota | Daniel | Ota |
| Zarith Othman | Zarith | Othman |
| Oskar Ottosen | Oskar | Ottosen |
| John Ottuh | John | Ottuh |
| Apio Otuko | Apio | Otuko |
| Obinna Otuu | Obinna | Otuu |
| Chung-Ming OU | Chung-Ming | OU |
| Hsia-Hung Ou | Hsia-Hung | Ou |
| Abdelaziz Ouamri | Abdelaziz | Ouamri |
| Alena Oulehlová | Alena | Oulehlová |
| Leandro Ouriques | Leandro | Ouriques |
| Ahmed Oussous | Ahmed | Oussous |
| Vasiliy Ovodkov | Vasiliy | Ovodkov |