| | Ezekiel O.Chiejina |
| | Office of Director, Estab & ind. Relations, Alimia |
| | David Ogah |
| | Dr. Akinwale Ojo |
| | Uche H. Okororie |
| | Festus Okotie |
| | Francis G.I Omiunu |
| | Simeon A. Omole |
| | Sola Oni(ed) |
| | Andrew G. Onokerhoraye |
| | Patrick Ono-Wosafey |
| | Onyekosor, P.A. |
| | Vivenne Onyiuke |
| | Alban C. Opara |
| | Tony Uso Oraegbu |
| | World Health Organisation |
| | World Trade Organisation |
| | Charles I. Oriaku |
| | Frank Sochukwu Oshanugor |
| | Kolawole S. Owolabi |
| | William V. Packard |
| | Roy Pearson |
| | Marton J. Peck |
| | Nevil Philips |
| | Dr. D. Prasad |
| | Vishnu Prasad |
| | Informa Professional |
| | David Steel QC |