Star Spangled Rhythm is a 1942 American all-star cast musical film made by Paramount Pictures during World War II as a morale booster.

The film has music by Robert Emmett Dolan and songs by Harold Arlen and Johnny Mercer, and the cast consisted of most of the stars on the Paramount roster.

Pop Webster is a former silent movie star once known as "Bronco Billy" who now works as the guard on the main gate at Paramount Pictures.

Paramount paid Arthur Ross and Fred Saidy for the rights to two sketches from their musical revue Rally Round the Girls, which were used in the film.

He objected to the "Bronco Billy" character in Star Spangled Rhythm being a "washed-up and broken-down actor", which he felt reflected badly on himself.