O'Driscoll Diarmuid
Ogawa Mitsunori
Ohlsson Henrik
Oja Hannu
Okhrin Ostap
Okunev Pavel
Olapade A. K.
Olbermann B. P.
Olea Ricardo
Olofsson Peter
Olshen Richard A.
Olsson Jimmy
Olszewski Wojciech
Omelka Marek
Ooi Hong
Oppenheim Georges
Orbanz Peter
Osius Gerhard
Ott R. C.
Ould Maouloud Sidi Mohamed