 Obando 1983 |
 O'Boyle 1967 |
 O'Brien 2003 |
 O'Connell 1911 |
 O'Connor 1985 |
 Oddi 1969 |
 O'Donnell 1925 |
 Ó Fiaich 1979 |
 O'Hara 1958 |
 Okogie 2003 |
 Ortega 1994 |
 Ottaviani 1953 |
 Otunga 1973 |
 Ouellet 2003 |
 Oviedo 1994 |