Alan Dudley Bush (22 December 1900 – 31 October 1995) was a British composer, pianist, conductor, teacher and political activist. A committed communist, his uncompromising political beliefs were often reflected in his music. He composed prolifically across a range of genres, but struggled through his lifetime for recognition from the British musical establishment, which largely ignored his works.

Bush was the founder of the Workers' Music Association together with Will Sarnowe in 1936.