George Antheil (born Trenton, New Jersey, 8 July 1900; died New York City, 12 February 1959) was an American composer, pianist, author and inventor. He became known in America and Europe as a composer of very modern sounding music, including his Ballet Mécanique. His music was very noisy and full of mechanical sounds. His audiences were often shocked at the music. He spent some years in Europe, then, in 1930s, he returned to America where he spent a lot of time writing film music for Hollywood and ballets. His music became less aggressive and more traditional.
He had many interests, and spent some time researching female endocrinology, as well as writing a mystery novel and newspaper advice and music columns. Together with the actress Hedy Lamarr he invented and patented a frequency-hopping torpedo guidance system.