Skip to main content - Older, Jules 1940-
- Olsen, Barbara
- Olson, Gretchen
- Olson, Kay Melchisedech 1948-
- Olson–Brown, Ellen 1967-
- Olten, Manuela 1970-
- Onyefulu, Ifeoma 1959-
- Oppenheim, Shulamith Levey 1928-
- Oppong, Joseph Ransford 1953-
- Orback, Craig
- Orenstein, Denise Gosliner 1950-
- Orgel, Doris 1929- (Doris Adelberg; Suzanne Altman, a Joint Pseudonym)
- Orona–Ramirez, Kristy 1964–
- Orozco, José-Luis 1948-
- Ostow, Micol 1976–
- Ottley, Matt 1962–
- Owen, (John) Gareth 1936–2002
- Owen, James A.
- Owens, Mary Beth 1947–
- Oxenbury, Helen 1938-
