S. Al Ohali Shigeo Ohyagi Tom Mboya Okeyo Ngozi Okonjo-lweala Senam Okudzeto Jane Okun-Bomba Naoaki Okuzumi Hutham S. Olayan Lubna S. Olayan Nelisiwe Mildred Oliphant Jorrna Ollila Eric Olson Dan Sten Olsson Richard Olver John O. Onaiyekan Stephen Olabisi Onasanya Oscar Onyema Conrad van Oostrom