Judith Lynne Sill (October 7, 1944 – November 23, 1979) was an American singer-songwriter. She was influenced by Bach, and wrote lyrics drawing on Christian themes of rapture and redemption.

Sill was the first artist signed to David Geffen's label Asylum. She released her first album, Judee Sill, in 1971, followed by Heart Food in 1973. In 1974, Sill recorded demos for a third album, which was never completed.

Sill struggled with addiction through much of her life and died of a drug overdose in 1979. She did not find commercial success, and at the time of her death, no obituary was published; however, several artists have since cited her as an influence. Her demos were released with other rarities on the 2005 collection Dreams Come True.