Oronzio de Nora S.a.
Orr William H.
Orsal Bertrand
Orton Michael L.
Osaka Sanso Kogyo Kabushiki-Kaisha
Osaki Hisashi
Osara Karri
Osborne Norman
Ossmer Uwe
Osterberg Raymond Charles
Ostrowski Arthur E.
Ostwald Carmen
Otani Eisuke
Otsuka Susumu
Ottersbach Walter
Otto F. Kammerer
Outlaw Benjie T.
Ouyagi Yashichi
Ouyang Jiangbo
Overacker Walter G.