Frederic Austin (30 March 1872 – 10 April 1952) was an English baritone singer, a musical teacher and composer in the period 1905–30. He is best remembered for his restoration and production of The Beggar's Opera by John Gay and Johann Christoph Pepusch, and its sequel, Polly, in 1920–23. Austin was the older brother of the composer Ernest Austin (1874–1947).