Judith Lynne Sill (October 7, 1944 – November 23, 1979) was an American singer and songwriter. The first artist signed to David Geffen's Asylum label, she released two albums, then worked briefly as a cartoonist before dying of drug abuse in 1979. Her eponymous debut album was released in late 1971 and was followed about 18 months later by Heart Food. In 1974 she recorded demos for a third album, which were released with other rarities on the 2005 two-disc collection Dreams Come True.
Sill was heavily influenced by Bach's metric forms and suites, while lyrically her work drew substantially on Christian themes of rapture and redemption.