Last names starting with "O"
- Class of 1988 Janel O Brien
- Class of 2010 Tiffany O'neal
- Paul O'neil
- Class of 1971 Lorraine O'Steen (formerly Velasco)
- Class of 1970 Frank Offenhauser
- Class of 1971 Philip Offenhauser
- Class of 1971 Phillip Offenhauser
- Class of 1978 Sean Olsen
- Class of 1986 Shelly Olsen (formerly Sauce)
- Class of 1981 Lori Olson
- Paul Oneil
- Class of 1982 Allison Ontiveros
- Class of 1982 Scott Orloff
- Class of 1996 Daria Oros
- Class of 1974 Karen Orosco
- Class of 1981 Sarah Overton
- Class of 1986 Quinn Owen
- Jennifer Owens
- Class of 1982 Lisa Owens
Looking for El Dorado High School Placentia, CA alumni not listed? If so, check out Classmates.com® - hundreds of more EDHS alumni have posted their profiles.
About the El Dorado High School Alumni Directory
Check out all of the names of the El Dorado High School alumni that attended high school in Placentia that are listed above. Registering will allow you to join the directory. You can share memories of those activities that you were involved with at El Dorado HS and you can view other alumni and read what other former students have posted about the time they spent at El Dorado.