O'Brien Jack
O'Mara John Ed
O'Connell William J.
O'Dea John A.
Oertel Johannes
Officine Meccaniche Galletti, O.M.G. S. R. L.
Officine Riunite Udine Spa
Ohlson Karl G.
Okamoto Taro
Okubo Haguruma Kogyo Kabushiki Kaisha
Ono Sadamu
Onoue Atsuo
Orthner Gordon W.
Osborn Arthur Robert
Oshita Kenichi
Osterlund Jan A.
Osterlund Inc.
Oury Robert F.
Owen Frank I
Ozinga Bros., Inc.