Last names starting with "O"
- Class of 1963 Kathleen O Brien
- Karen O'Connor
- Class of 1972 Michele O'Connor
- Class of 1963 Kathleen Obrien
- Class of 1968 Patricia Oconnor
- Class of 1971 Jeanne Odea
- Class of 1969 Mary Odonnell
- Jenny Oh
- Marilyn Olcese
- Class of 1963 Carol Oleary
- Class of 1972 Christen Olsen
- Class of 1970 Jean Olson
- Class of 1971 Lynn Omara
- Class of 1988 Pamela Ong
- Class of 1980 Sylvia Onorato
- Class of 1959 Joanne Orengo
- Class of 1981 Kathy Oriet
- Class of 1972 Elizabeth Ortiz
- Class of 1980 Eileen OSullivan
- Class of 1980 Joan Osullivan
Looking for Mercy High School San Francisco, CA alumni not listed? If so, check out Classmates.com® - hundreds of more MHS alumni have posted their profiles.
About the Mercy High School Alumni Directory
If you attended Mercy High San Francisco, CA lifornia and want to be added to the alumni directory register now to add your name to the alumni list. While you are reminiscing about the times you spent in high school at Mercy High School, you should also check out alumni photos, yearbook listings and share any reunion info if possible.