Ohashi Matsuo
Ohsumi Masayuki
Ohtonen Jukka
Oka Yozo
Okita Yoshishioro
Okuhara Tatsuya
Oldham James R.
Olofsfors AB
Olsen Tor Ole
Olsen William M.
Olson Jay Harold
Ondayko Mike
Ono Ryou
Oobora Yoshimasa
Orava Arto
Oregon House Pty Ltd.
Original Tractor Cab Company Incorporated
Ortolani Davide
Oscarsson Jerker E.
Osmundson Mfg. Co.