Obokata Tomio
Odendall Bodo
Officine Meccaniche Odolini Catullo S.A.S. di Roberto Gandini &
Ohkubo Takashi
Ohwada Takahumi
Okada Tatsuo
Okamoto Ryuji
Old Charles F.
Oleksiewicz Radek
Oller Stephen G.
Olschefski Robert
Omuro Yoshiya
Ooiwa Katsuhiko
Östman Fredrik
Otulak Josef