O'Brien Cornelius F.
O'Brien Edward J.
O'Connor Lawrence
O'Connor Robert
O'Neil William
O'Sullivan Corporation
Oberholzer Willi
Oe Hideyuki
Oehrl Wilhelm
Oellers Dieter
Oesterwind Roland
Oetringhaus Walter G.
Oettershagen Bodo
Offerhaus Douglas Henry
Offermann Joseph V.
Officina Meccanica Pisani Luigi
Officine Meccaniche Pavesi & C.S.p.A.
Ogden Terry P.
Ogg Randy Gene
Ogiso Tutomu