List of Science Fiction Authors - O

O

Robert C. O'Brien (1918–1973)
Kevin O'Donnell, Jr. (born 1950)
Patrick O'Leary (born 1952)
Vladimir Obruchev (1863–1956)
Andrew J. Offutt (born 1937)
Nnedi Okorafor (born 1974)
Chad Oliver (1928–1993)
Jerry Oltion (born 1957)
John Ostrander (born 1949)
Jerry Ordway (born 1957)
Marek Oramus (born 1952)
Rebecca Ore (born 1948)
George Orwell (1903–1950) (pseudonym of Eric Arthur Blair)

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