Last names starting with "O"
- Class of 1989 Irma Ogas
- Francisco Ojeda
- Class of 2018 Caitlyn Olmos
- Class of 2009 Yareli Olmos
- Class of 2014 Marissa Oltivero
- Class of 1971 Guadalupe Olvera
- Class of 2012 Caesar Ontiveros
- Class of 1990 Miguel A Ontiveros
- Class of 2003 Ilean Ortega
- Class of 1969 John Ortiz
- Nicholas Ortiz
- Class of 1971 Rosa Ortiz
- Class of 2012 Tiffany Otavero
- Sandra Owen
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About the Dimmitt High School Alumni Directory
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