Martin Archer Flavin (November 2, 1883 – December 27, 1967) was an American playwright and novelist.
Flavin was born in San Francisco, California, and died in Carmel, California. He was a Sigma Chi at the University of Chicago, which he attended from 1903 to 1905. His novel Journey in the Dark received both the Harper Prize for 1943 and a Pulitzer Prize for 1944.