Alphabetical Author Index - O
- Orts, Maria Josè
- Orts, William J.
- Ortuño Padilla, Armando
- Ortuño-Padilla, Armando
- Ortúzar, Juan de Dios
- Ortyl, Łukasz
- Ortzman, Tyler
- Oruba, R.
- Oruba, Rajmund
- Oruç, Mehmet
- Oruç, Şeref
- Oruc, Sertac
- Oruç, Vedat
- Orucu, Murat
- Orue Irasuegi, Aitor
- Orugbo, Ena E.
- Oruji, Hossein
- Oruji, Soheil
- Orumiyehei, Amir
- Orumiyehei, Amirhossein
- Oryu, Tamami
- Orzech, Mark D.
- Orzechowski, Maciej
- Orzechowski, Mateusz
- Orzechowski, Tadeusz
- Orzelski, Kamil
- Orzessek-Kruppa, Ruth
- Orzhekhovskiy, Anatoliy
- Orzhekhovsky, Anatoly
- Orłowicz, Romuald
- Orłowska, Anita
- Orłowski, Michał
- Orłowski, Tomasz
- Orłowski, Zygmunt
- Osa-Chans, E.
- Osa-uwagboe, Norman
- Osaba, Eneko
- Osaba Icedo, Eneko
- Osabel, Dave Montellano
- Osácar, Amaya