Authors
| Name | First name | Last name |
|---|---|---|
| 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 |
| Joel Osei-Asiamah | Joel | Osei-Asiamah |
| 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 |
| Akintunde Osunkanmibi | Akintunde | Osunkanmibi |
| 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 |
| Ouail Oulmakki | Ouail | Oulmakki |
| Leandro Ouriques | Leandro | Ouriques |
| Ahmed Oussous | Ahmed | Oussous |
| Vasiliy Ovodkov | Vasiliy | Ovodkov |
| Allyson Owens-Horton | Allyson | Owens-Horton |
| Abdülkadir Öz | Abdülkadir | Öz |
| Rustem Ozarmagan | Rustem | Ozarmagan |
| Odcikin Ozdemir | Odcikin | Ozdemir |
| Julije Ožegovć | Julije | Ožegovć |
| Bülent Özkan | Bülent | Özkan |
| Fatma Özkurt | Fatma | Özkurt |
| Burak Özpek | Burak | Özpek |
| Karahan Öztürk | Karahan | Öztürk |
| Tom O’Donoghue | Tom | O’Donoghue |
| Norman O’Reilly | Norman | O’Reilly |
| Christopher O’Sullivan | Christopher | O’Sullivan |
| Kent O’Sullivan | Kent | O’Sullivan |
| Hanna Paananen | Hanna | Paananen |