Last names starting with "O"
- Juan O'Neill
- Class of 1944 Richard Obriot
- Class of 2000 Derek Oliver
- Class of 2000 Derrick Oliver
- Class of 1970 Rosalyn Oliver
- Class of 1980 Delores Oneal
- Class of 2000 Vicente Ontiveros
- Class of 2010 Keysha Ortega
- Class of 1973 Joyce Osley
- Ron Ostezan
- Class of 1980 Sandra Ostrowits
- Class of 1998 Canbera Overall
- Cannbera Overall
- Class of 1974 Deborah Owens
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