Thousands Cheer is a 1943 American musical comedy film directed by George Sidney and released by Metro-Goldwyn-Mayer. Produced during the Second World War, the film was intended as a morale booster for American troops and their families.

George Sidney was an American film director and producer who worked primarily at Metro-Goldwyn-Mayer. His work includes cult classics Bye Bye Birdie (1963) and Viva Las Vegas (1964). With an extensive background in acting, stage direction, film editing, and music, Sidney created many of post-war Hollywood's big budget musicals, such as Annie Get Your Gun (1950), Show Boat (1951), Kiss Me Kate (1953), Jupiter's Darling (1955), and Pal Joey (1957). He was also a president of the Screen Directors Guild for 16 years.