Thomas Hauser is an American author.

He made his debut as a writer in 1978 with The Execution of Charles Horman; An American Sacrifice. Horman's wife, Joyce and father, Ed Horman cooperated with Hauser on the book describing both the fate of Charles and his family's quest to uncover the truth in Chile. It was nominated for a Pulitzer Prize and adapted as Costa-Gavras's film Missing. In 1981, he published a novel, Ashworth & Palmer, set in a fictional law firm, which was inspired by his experience as an associate at Cravath, Swaine & Moore from 1971 through 1977, following his graduation from Columbia Law School in 1970.

In 1991 he was awarded the William Hill Sports Book of the Year award for Muhammad Ali: His Life and Times, a biography of the boxer.