Last names starting with "O"
- Class of 1964 David Obrien
- Class of 1949 Marian Ockuly
- Class of 1947 Eugene Oclkuly
- Class of 1966 Thury Oconnor
- Barbara Oehme
- James Ogrizek
- Karen Ogrizek
- Anthony Oliver
- Class of 2007 Britney Oliveras
- Class of 1967 Bonnie Olsen
- Class of 1978 Lynn Olsen
- Michael Olshewski
- Class of 1980 Kimberly Omalley
- Class of 1965 Beverly Oranski
- Sarah Ortiz
- Class of 1958 Ruth Otto
- Class of 1954 Harvey Overshiner
- Norreen Owen
- Class of 1982 Antoinette Owens
- Linda Owens
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About the John Marshall High School Alumni Directory
Check out all of the names of the John Marshall High School alumni that attended high school in Cleveland that are listed above. Registering will allow you to join the directory. If you are an alumn of John Marshall High 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.