James Warner Bellah (September 14, 1899 in New York City – September 22, 1976 in Los Angeles, California) was an American Western author from the 1930s to the 1950s.
His pulp-fiction writings on cavalry and Indians were published in paperbacks or serialized in the Saturday Evening Post.
Bellah was the author of 19 novels, including The Valiant Virginian (the inspiration for the 1961 NBC television series The Americans), and Blood River.
Some of his short stories were turned into films by John Ford, including Fort Apache, She Wore a Yellow Ribbon, and Rio Grande.
With Willis Goldbeck he wrote the screenplay for The Man Who Shot Liberty Valance.