Last names starting with "O"
- Class of 2015 Neysu Obike
- Class of 1982 James Odonnell
- Class of 1995 Wendy Ofiell (formerly Lewis)
- Lavion Oglesby
- Class of 1979 Steven Olson
- Class of 2002 Jessica Oneil
- Allyson ONeill
- Class of 2009 Erika Orellana
- Rose Orem
- Class of 2016 Recheal Orji
- Class of 1995 Michael Orndorff
- Class of 1977 Maria Ortega Kummer
- Class of 1989 Marc Osterburger
- Class of 1992 Katrina Overton
- Class of 2009 David Owen
- Class of 1974 Douglas Owings
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About the Oakland Mills High School Alumni Directory
Check out all of the names of the Oakland Mills High School alumni that attended high school in Columbia that are listed above. Registering will allow you to join the directory. Oakland Mills High School alumni can relive their experiences from high school by sharing memories and pictures, reconnecting with those alumni listed, and more.