O'Neil Douglas Edwin
O'Connor Brian
O'Connor Kevin R.
Obase Yoshihiro
Ochi Toshihito
Odedina Samuel
Odman Knut T.
Ohgad Edan
Oikonomou Kostas
Oikonomou Kostas N.
Oka Tomeo
Olesen Robert L.
Olesinski Wlodek
Oman Andreas
Omar Hassan Mahmoud
Omidi Javad
On Guard Plus
Ono Goichiro
Onsy Sam
Opaluch Robert Edward