Harry Mathews (February 14, 1930 – January 25, 2017) was an American author of short fiction, poet, translator and essayist. He was also a translator of French. He was known for translating the English novel Ellis Island: Revisited in French. He was also known about writing essays of the French language. From 1961 through 1962, he wrote articles for the Locus Solus. He was known for his novels: The Conversions (1962) and My Life in CIA (2005).
Mathews was born in New York City. He was raised in Massachusetts. He studied at Princeton University and at Harvard University. In 1949, he eloped with his childhood friend and artist Niki de Saint Phalle. They had two children. They were separated in 1960. He later married Marie Chaix. Their marriage would last until Mathews' death in 2017.