Authors
| Name | First name | Last name |
|---|---|---|
| Hiroyuki Okazaki | Hiroyuki | Okazaki |
| Ayodeji Oke | Ayodeji | Oke |
| Chukwuekem Okeke | Chukwuekem | Okeke |
| Joy Okeke-Ezeanyanwu | Joy | Okeke-Ezeanyanwu |
| Nkiru Okolo | Nkiru | Okolo |
| Abraham Okomanyi | Abraham | Okomanyi |
| Enoch Okon | Enoch | Okon |
| Mary Okonkwo | Mary | Okonkwo |
| Riskey Oktavian | Riskey | Oktavian |
| Angela Okuku | Angela | Okuku |
| Anayo Okwor | Anayo | Okwor |
| Theresa Okwumabua | Theresa | Okwumabua |
| Martha Olcott | Martha | Olcott |
| Eli Olinick | Eli | Olinick |
| Sandra Olivares-Bautista | Sandra | Olivares-Bautista |
| José Oliveira | José | Oliveira |
| 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 |
| Erumusele Onotole | Erumusele | Onotole |
| 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 |