Last names starting with "O"
- Class of 1964 Paulette O Brecht
- Harry O'Hara
- Class of 1984 Steven OBryan
- Class of 2005 Brad Oconnel
- Class of 1986 Nancy Oconnell (formerly Pirau)
- Amy Odonnel
- Class of 1975 Kim Oman
- Class of 1978 Steve Orr
- Class of 2007 Robert Osorio
- Class of 2007 Steven Otero
- Class of 1959 Kathleen Otoole
- Class of 2004 Liana Owen Brown
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About the Griffith Senior High School Alumni Directory
If you attended Griffith Senior High and want to be added to the alumni directory register now to add your name to the alumni list. Don't forget to upload your Griffith Senior High School pictures and check on the latest info about any Griffith Senior High School reunion.