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- One Flew Over the Cuckoo's Nest
- One Hundred Years of Solitude
- One Is One
- One of the Smallest
- Onega, Susana 1948–
- Onfray, Michel 1959-
- Ong, Han 1968-
- Ong, Water J(ackson) 1912-2003
- Onians, Richard (Lathbury) 1940-1999
- Ono, Yoko 1933-
- Onwueme, Osonye Tess 1955–
- Onyefulu, Ifeoma 1959-
- Ooi, Keat Gin 1959-
- Opdyke, Irene Gut 1918-2003
- Oppedisano, Jeannette M. 1943–
- Oppel, Kenneth 1967–
- Oppenheim, Frank M. 1925-(Frank Oppenheim, Frank Matthias Oppenheim)
- Oppenheim, Joanne 1934–
- Oppenheimer, Mark 1974–
