Skip to main content - O'Shaughnessy, Mary (Perri O'Shaughnessy, a joint pseudonym)
- O'Shaughnessy, Mary (Perri O'Shaughnessy, Joint Pseudonym)
- O'Shaughnessy, Pamela (Perri O'Shaughnessy, a joint pseudonym)
- O'Shaughnessy, Pamela (Perri O'Shaughnessy, Joint Pseudonym)
- O'Shea, Donal (Donal B. O'Shea)
- O'Shea, Mark 1956–
- O'Shea, Mick 1975-
- O'Shea, Pat 1931–
- O'Shea, Stephen
- O'Siadhail, Micheal 1947-
- O'Sullivan, Leanne 1983-
- O'Sullivan, Mark
- O'Sullivan, Michael 1957-
- O'Sullivan, P. Michael 1940-2004
- O'Toole, Fintan 1958-
- O'Toole, Patricia
- O'Toole, Shannon 1973–
- Oakdale, Suzanne
- Oakes, Andy 1952-
- Oakes, Edward T.
