Oguri Masaharu
Oh Suk-in
Ohayon Gerard
Ohayon Jean-Claude
Ohi Kazuhiko
Ohishi Tsuyoshi
Ohlsen Ib
Ohshita Takahiro
Ohtaka Matsuo
Ohyatsu Noriyuki
Okada Yusuke
Okamoto Akiyasu
Okazaki Hirofumi
Oki Katsuya
Okimune Katutosi
Oklahoma Gas and Electric Company
Okochi Iwao
Oksanen Mauno
Olausson Karl A.
Oldham James A.