William Robert “Bill” Dixon (October 5, 1925 – June 16, 2010) was an American composer, improviser, visual artist, activist, and educator. Dixon was one of the seminal figures in free jazz and late twentieth-century contemporary music. His was also a prominent voice arguing for artist’s rights and insisting, through words and deeds, on the cultural and aesthetic richness of the African American music tradition. He played the trumpet, flugelhorn, and piano, often using electronic delay and reverb.

Dixon hailed from Nantucket, Massachusetts, United States. His family moved to Harlem, in New York City, in 1934. He enlisted in the Army in 1944; his unit served in Germany before he was discharged in 1946. His studies in music came relatively late in life, at the Hartnette Conservatory of Music (1946–1951), which he attended on the GI Bill. He studied painting at Boston University and the WPA Arts School and the Art Students League. From 1956 to 1962, he worked at the United Nations, where he founded the UN Jazz Society.

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