A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z

• O'Connor, Terry - Jossco NZ Limited - New Zealand
• Obrist, Don - Barenbrug USA, Inc. - USA
• Oesterreicher, Jeff - Great Lakes Hybrids - USA
• Okot, Josephine - Harvest Farm Seeds Ltd. - Uganda
• Olivas, Nathan - Progeny Advanced Genetics - USA
• Omar, Nail - Trust Seeds - Jordan
• Omer Rashid Muhammad - Rashid Seeds - Pakistan
• Orero, Agustin - Semillas Battle S.A. - Spain
• Ormanov, Angel - Adri. Ltd. - Bulgaria
• Ovenden, Gerry - Southern Seed Technology Ltd.

• Ozbugday, Aykut - Ozbugday Seed Inc. - Turkey