Thomas Hardie Chalmers (20 October 1884 - 11 June 1966) was an American opera singer, actor, and filmmaker.
Thomas Chalmers was born on October 20, 1884 in New York City, the son of Thomas Hardie and Sophia Amanda (De Bann) Chalmers. In 1909, he went to Florence to study singing with Vincenzo Lombardi and made his operatic debut in May 1911 in Fossombrone as Marcello in La bohème. His first appearance in the United States was as Jack Rance in The Girl of the Golden West with Henry Wilson Savage's English Grand Opera Company. Chalmers toured the United States with the company from 1911 to 12. He then sang as the leading baritone with the Boston National Opera Company and the Century Opera Company before making his Metropolitan Opera debut on November 17, 1917 as Valentin in Faust. He went on to appear regularly at the Met until 1922 and sang in the world premiere of Shanewis, the US premiere of Mârouf, and the first Met performances of La forza del destino and Crispino e la Comare. His recordings were all made for Edison and covered a wide range of repertoire from folk songs to opera; he recorded both on cylinder and the Edison Disc Record formats.
Following a throat operation, Chalmers withdrew from opera and became a stage and film actor. His many stage roles included several Broadway premieres such as Landolfo in Pirandello's The Living Mask (Henry IV), 1924; Doctor Schindler in Schnitzler's The Call of Life (Der Ruf des Lebens), 1925; Captain Adam Brant in O'Neill's Mourning Becomes Electra, 1931; Ben Loman in Miller's Death of a Salesman, 1949; and Richard Bravo in Maxwell Anderson's The Bad Seed, 1954.