Holly Herndon (born 1980) is an American composer, musician, and sound artist based in Berlin, Germany.

After studying composition at Stanford University and completing her Ph.D. at Stanford University’s Center for Computer Research in Music and Acoustics, she pursued a music career internationally. Herndon's music often includes human singing voices (including her own), is primarily computer-based, and regularly uses the visual programming language Max/MSP to create custom instruments and vocal processes.

She has released music on the labels RVNG Intl. and 4AD. Her most recent full-length album Proto was released on May 10, 2019.