William Grant Still Jr. (May 11, 1895 – December 3, 1978) was an American composer of nearly 200 works, including five symphonies, four ballets, nine operas, over thirty choral works, plus art songs, chamber music and works for solo instruments.

Often referred to as the "Dean of Afro-American Composers", Still was the first American composer to have an opera produced by the New York City Opera. Still is known primarily for his first symphony, Afro-American Symphony (1930), which was, until 1950, the most widely performed symphony composed by an American.

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