Last names starting with "O"
- Kathleen O'Brien
- Class of 1964 James OBrien
- Class of 1978 Tammy Obrien
- John Ochoki
- Kathy Okeef
- Class of 1966 Rebecca Oliger (now Sain)
- Class of 1974 Maureen Olive
- Class of 1979 Debbie Olsen (now Halma)
- Class of 1974 Thomas OMalley
- Class of 1982 James Oneill
- Class of 1980 Janine Opresnick
- Anna Ortu
- Class of 1960 Raymond Osadchuk
- Robert Osborn
- Nathalia Ospina
- Class of 1964 Lorraine Ost (now Welsh)
- Alexis Otero
- Class of 1982 Leslie Ott
- Class of 1981 Paul Otteggi
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About the Hanover Park High School Alumni Directory
Check out all of the names of the Hanover Park High School alumni that attended high school in East Hanover that are listed above. Registering will allow you to join the directory. For former Hanover Park HS students from NJ, you can view the class reunion information that has been posted by other site visitors. In addition, we encourage you to post your profile in the alumni directory, share information about the school activities you were involved with and reconnect with Hanover Park High School alumni.