O'Brien Theodore E.
O'Brien Theodore Earl
O'Connor Patrick Thomas
O'Donnell Garry
O'Neill Robert S.
Oak Eugene
Oberlander Werner
Odorico Angelo
Oe Noboru
Oellig Franklin A.
Oen Rick
Officina Meccanica Sestese S.p.A.
Officine Minnetti Di Federico Minnetti & C.S.A.S.
Officine Vezzani S.p.A.
Ohkawara Kenji
Okajima Kazumichi
Okajima Tadashi
Okaya Shunichi
Okazaki Yoshitake
Olding Kenneth E.