Alphabetical Author Index - O
- Opitz, Heinz
- Opitz, M. W.
- Opitz, Rüdiger
- Opitz, Valentin
- Opiyo, Romanus Otieno
- Opkvitne, Ola
- Oplatka, G.
- Oplatka, Gàbor
- Oplatka, Georg
- Oplatka, Matthias
- Oplt, Tomáš
- Opoka, S.
- Opoko, A. P.
- Opoko, Akunnaya P.
- Opoko, Akunnaya Pearl
- Opoku, Alex
- Opoku, De-Graft Joe
- Opoku, Desmond
- Opoku, Precious Dapa
- Opoku, Prince Atta
- Opoku, Richard
- Opoku Ware, Stephen Nana
- Opoku-Brafi, Sabastina
- Opolka, Jochen
- Opon, Joel
- Opon, Joel G.
- Oponczewski, Mareike
- Oponowicz, Piotr
- Opp, Christian
- Oppe, M.
- Oppe, Matthias
- Oppe, Matthias W.
- Oppel, Henning
- Oppel, Mike
- Oppelt, Thomas
- Oppeneder, Johannes
- Oppenheim, Dory
- Oppenheim, I. J.
- Oppenheim, Irving J.
- Oppenheim, P.
- Oppenheim, Peter
- Oppenheimer, Nat
- Oppenlaender, Jonas
- Opperman, G. H. P.
- Opperman, Gert
- Oppermann, B.
- Oppermann, Bettina
- Oppermann, J.
- Oppermann, Luise
- Oppermann, Peter
- Oppermann, R. H.
- Oppert, Michelle L.
- Oppikofer, Reinhard
- Oppio, Alessandra
- Oppitz, David
- Oppo, Sonia
- Oppon, James Anthony
- Oppong, Felix
- Oppong, Goodenough D.
- Oppong, Goodenough Dennis