Last names starting with "O"
- Class of 1991 Echo O'kain
- Class of 1991 Ryan O'Kain
- Class of 1980 Francis Obrien
- Class of 1986 Liz Odonnell
- Class of 1993 Michael Odoski
- Class of 1994 Echo Okain
- Class of 1982 Robert Okonski
- Class of 1969 Kathy Omelia
- Class of 2003 Stephanie Onodi
- Class of 1960 Judith Openshaw
- Class of 1983 Kathleen Ortman (formerly Conner)
- Class of 1979 Shelley Oster
- Class of 1978 Nancy Overs
- Kayla Ovesney
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About the South Park High School Alumni Directory
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