Last names starting with "O"
- Class of 1996 Mary Odenthal
- Class of 1956 Joan Oklawicz
- Class of 1957 Joan Oklejwicz Oklejwicz
- Class of 1979 Loreen Oklejwicz
- Joan Okleweicz
- Class of 1956 Joan Oklewiecz
- Class of 1973 Debbie Oldland
- Class of 1973 Deborah Oldland (now Thomas)
- Class of 1959 Annamae Oleska
- Class of 1982 Timothy Oliver
- Carmee Oluvic
- Class of 1956 Sarah Jane Onomastico
- Class of 1941 Rose Orifici
- Class of 1966 Paulette Orsini
- Class of 1962 Roseann Orsini
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About the Clairton High School Alumni Directory
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