Authors
| Name | First name | Last name |
|---|---|---|
| Diego Oliveira | Diego | Oliveira |
| David Oliver | David | Oliver |
| Roman Oliynykov | Roman | Oliynykov |
| José Olmeda | José | Olmeda |
| Luis Olmos | Luis | Olmos |
| Martina Olmos | Martina | Olmos |
| Andrew Olney | Andrew | Olney |
| Aramide Oloidi | Aramide | Oloidi |
| Edvin Olsson | Edvin | Olsson |
| Ebenezer Olubiyi | Ebenezer | Olubiyi |
| Olayinka Olusanya | Olayinka | Olusanya |
| James Omanwa | James | Omanwa |
| Mariya Omelicheva | Mariya | Omelicheva |
| J.O. Omolehin | J.O. | Omolehin |
| Adebayo Omotosho | Adebayo | Omotosho |
| EN Omweno | EN | Omweno |
| 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 |