O, Hok Wai   Obayashi, Senichi
  Oberg, Svante   Obst, Dieter
  Ochi, Yoshimichi   Odounfa Epouse Kouadio, Alice
  Oettel, Andreas   Ogasawara, Haruhiko
  Ograjensek, Irena   Oh, Jong-Nam
  Ohyauchi, Nao   Oktay Firat, Seniye Umit
  Okuda, Naohiko   Oladoye, John
  Olea, Ricardo A.   Olenski, Jozef
  Ollila, Pauli   Oltmanns, Erich
  Ong, Seng-Huat   Opsomer, Jean
  Oral, Evrim   Orkin, F.M.
  Orschinack, Andrea   Ortolani, Giovanni Giuseppe
  Ostasiewicz, Walenty   Osunsade, F.L.
  Otilia, Fernanda   Ottaviani, Maria Gabriella
  Outrata, Edvard   Ovi, J°rgen
  Oyola, Jose Antonio   Íhrvik, John