John Champlin Gardner was a well-known and controversial American novelist and university professor, best known for his novel Grendel, a retelling of the Beowulf myth.

Gardner was born in Batavia, New York. His father was a lay preacher and dairy farmer, and his mother taught English at a local school. Both parents were fond of Shakespeare and often recited literature together. As a child, Gardner attended public school and worked on his father's farm, where, in April of 1945, his younger brother Gilbert was killed in an accident with a cultipacker. Gardner, who was driving the tractor during the fatal accident, carried guilt for his brother's death throughout his life, suffering nightmares and flashbacks. The incident informed much of Gardner's work.