O'sullivan Eugene F.
Oberoi Bhushan Kumar
Officine Morandi S.r.l.
Ogata Katsuya
Ogata Masahiro
Ogura Mitsuharu
Ohlson George
Ohta Toshiaki
Ojanen Paavo
Okada Koichi
Okada Senri
Okami Eiryo
Oliver Albert
Olsson Karl G.
Olympian Stone Company Inc.
Omori Kazuhiko
Osmundson Eric C.
Ottmann Norman
Otto L. Forchheimer