Obata Kouji
Obayashi Kazuyoshi
Obel Erik M.
Ogashi Yoshihiro
Ogata Hideo
Ogden Graham M.
Ohara Kenichi
Ohnishi Kouhei
Ohnishi Tokuo
Ohnuki Yasumichi
Ohta Mikio
Ohtani Hiroki
Ohtani Tsugutoshi
Oilfield-Electric-Marine, Inc.
Okachi Hiroaki
Okamura Yukihiko
Ominato Hirotaro
Ooishi Hisao
Oono Yoshinori
Oota Tatsuo