Last names starting with "O"
- Class of 2008 William O'Day
- Class of 1978 Kimberly Oakes
- Class of 2003 Heather OConnell
- Class of 2006 Jennifer Oddo
- Class of 1987 Kevin Odonhue
- Class of 1986 Kevin Odonoghue
- Class of 1977 Linda Ogden
- Class of 1977 Robin Ogden
- Class of 2010 Maura Oneill
- Class of 2011 Adilene Orozco
- Class of 2010 Angel Ortega
- Class of 1975 Judy Ott
- Domna Owsiany
- Class of 1966 Michael Ozechowski
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About the Garnet Valley High School Alumni Directory
Check out all of the names of the Garnet Valley High School alumni that attended high school in Glen Mills that are listed above. Registering will allow you to join the directory. Garnet Valley High School alumni can relive their experiences from high school by sharing memories and pictures, reconnecting with those alumni listed, and more.