O'Breartuin Ciaran
O'Brien William Joseph
O'Connell Timothy R.
O'Connor Donald F.
O'Connor-d'Arlach Jorge
O'Dea Orrin B.
O'Leary Mark
O'Malley Paul W.
O'Meara J. M.
O'Neil Edward F.
O'Neil, II Vernon P.
O'Neill R. E.
O'Shaughnessy Timothy
O'Shaughnessy Timothy G.
Oberle Hans-Dieter
Obermeyer, Jr. John R.
Obregon Carlos D.
Ochi Shinji
Ochs Garrold W.
Oda Masami