Last names starting with "O"
- Class of 1980 Richard Obman
- Class of 2019 Christopher Ocampo
- Class of 2019 Maira Ochoa (now Ochoa)
- Class of 1968 Party Odonahue
- Class of 1968 Patricia Odonahue
- Class of 1981 Betty Oliver
- Class of 1990 Sharon Olson
- Owen Omerra
- Class of 1965 Elizabeth Orgovan
- Class of 1969 Lisa Orleman
- Class of 1993 Shannon Ormsby
- Class of 2002 Beth Ortiz
- Class of 1982 Carlos Ortiz
- Class of 1965 Karen Osgood
- Debbie Oshea
- Class of 1969 Alfred Overthrow
- Class of 1970 Dorothy Ozimkoski
- Class of 1979 Sharon Ozimkoski (now Honulik)
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About the Brien Mcmahon High School Alumni Directory
Check out all of the names of the Brien Mcmahon High School alumni that attended high school in Norwalk that are listed above. Registering will allow you to join the directory. If you are an alumn of Brien Mcmahon HS you should register now in the alumni directory. We also encourage you to interact with the rest of the alumni on this site. You can find old friends, share photos and stay updated on the latest school news.