O'Fathaigh Barra
Obara Makoto
Obata Hirozo
Obayashi Eiji
Oda Hirohisa
Oerther Charles J.
Officina Meccanica Montorfano S.n.c. di Montorfano Virginio e Re
Ognevsky Viktor A.
Ohbayashi Eiji
Ohdai Yozo
Ohhashi Masayoshi
Ohmori Kazuo
Oliver Randolph C.
Olsson Sven O.
Ona Hiroshi
Orii & Mec Corporation
Orlovsky Anatoly G.
Osborn Joseph B.
Ostrovsky Grigory A.
Owens, IV John D.