Jan Bach (born December 11, 1937 in Forrest, Illinois) is an American composer. He taught at the University of Tampa (Florida) from 1965 to 1966 and at Northern Illinois University in DeKalb, Illinois (music theory and composition) from 1966 to 2002. His primary performing instrument is the horn, and he is especially renowned for his horn pieces and especially well-known among hornists. He also plays the piano.
Jan Bach earned a Bachelor of Music degree in 1959 from the University of Illinois at Urbana-Champaign and a Doctor of Musical Arts degree in composition there in 1971. He also studied with Aaron Copland and Roberto Gerhard at Tanglewood in 1961 and with Thea Musgrave in Aldeburgh and London in 1974.
In 1957 he won the BMI Student Composers first prize. He later won the Koussevitsky competition at Tanglewood, the Harvey Gaul Composition Contest, the Mannes College opera competition, the Sigma Alpha Iota choral composition award, first prize at the First International Brass Congress in Montreux, Switzerland, grants from the National Endowment for the Arts and the Illinois Arts Council, the Brown University choral composition award, first prize in the Nebraska Sinfonia chamber orchestra competition, and first prize in the New York City Opera competition. He has been nominated six times for the Pulitzer Prize in music.