Thomas Stewart (August 29, 1928 – September 24, 2006) was an American bass-baritone who sang an unusually wide range of roles, earning global acclaim particularly for his performances in Wagner's operas. Thomas James Stewart was born in San Saba, Texas. He graduated from Baylor University in 1953 and then went to the Juilliard School, where he studied with Mack Harrell. An imposing six-footer, Stewart made his debut in 1954 as La Roche in the American premiere of Richard Strauss's Capriccio, going on to sing with the New York City Opera and Lyric Opera of Chicago.