Ondris Miroslav
Onillon Michel
Onishi Steven Kiyoshi
Onji Norio
Oohashi Yousuke
Ooi Kazushige
Ooki Hiroya
Oosawa Katsuich
Oozu Hayao
Ophir Optronics Ltd.
Optel System Limited
Opto Systems, Inc.
Optomistic Products, Inc.
Orihara Kozo
Ornetics International, Inc.
Oron Micha
Orskaug Terje
Osadchey Lance
Osadchey Lance M.
Osawa Yasuhiro