Okada Taiji
Okamura Noriaki
Okuzumi Tatsuya
Oliari Luigi
Oliver, III Robert M.
Olsson Ray A.
Omodei-Sale Amedeo
Onduka Yoshitaka
Ono Yaichro
Ooka Tadaaki
Oomori Kiyosi
Orchid Research Laboratories Limited
Osa Yumiko
Osada Katsunobu
Osaki Masaaki
Osawa Masashi
Osweckl Jane C.
Otsuki Susumi
Owen David A. A.
Özkök Akif