Douglas Leedy (born March 3, 1938) is an American composer, performer and music scholar.
Born in Portland, Oregon, Leedy studied with Karl Kohn at Pomona College and at the University of California, Berkeley, where he was in a composition seminar with membership including La Monte Young and Terry Riley. An orchestral hornist, harpsichordist, and singer, he studied South Indian music in Madras with K. V. Narayanaswamy, North Indian vocal music with Pandit Pran Nath, and was first music director of the Portland Baroque Orchestra and the musical director of the 1985 Portland Handel Festival, during which he conducted complete, period-instrument performances of Handel's oratorios Jephtha and Theodora. He taught music at UCLA, the Centro Simon Bolivar (Caracas), and at Reed College. He founded the electronic music studio at UCLA, and his synthesized music was among the earliest commissioned album-length recordings of the Moog Synthesizer and Buchla Synthesizer. The triple album Entropical Paradise was both the first triple album of synthesized "musical environments" — perhaps the first recording of explicitly ambient music — and featured modular analog synthesizer patches that, once set, played without further intervention by the performer. (Excerpts from Entropical Paradise were also included in the soundtrack album to the film Slaughterhouse Five as atmospheric complements to the music by Bach that had been featured in the actual Glenn Gould-produced soundtrack).