Thomas Williams, American author and academic (d. 1990)
Thomas Williams (November 15, 1926 – October 23, 1990) was an American novelist.

He won one U.S. National Book Award for Fiction—The Hair of Harold Roux split the 1975 award with Robert Stone's Dog Soldiers—and his last published novel, Moon Pinnace (1986), was a finalist for the National Book Critics Circle Award.