John Reed Sims (May 6, 1947 – July 16, 1984), was an American choir conductor born in Smith Center, Kansas.
Sims studied music composition at Wichita State University, and received his master's degree in music from Indiana University.
Moving to San Francisco, he became a music teacher by profession, serving for a time as a band teacher at Benjamin Franklin Junior High School in Daly City but soon became involved in the developing gay community.