Harry Austin Tierney (May 21, 1890 – March 22, 1965) was an American composer of musical theatre, best known for long-running hits such as Irene (1919), Broadway's longest-running show of the era (620 performances), Kid Boots (1923) and Rio Rita (1927), one of the first musicals to be turned into a talking picture (and later remade starring Abbott and Costello).