Armstrong Circle Theatre is an American anthology drama television series which ran from June 6, 1950, to June 25, 1957, on NBC, and from October 2, 1957, to August 28, 1963, on CBS. It alternated weekly with The U.S. Steel Hour. It finished in the Nielsen ratings at number 19 for the 1950–51 season and number 24 for 1951–52. The principal sponsor was Armstrong World Industries.