Tanya Donelly (born July 14, 1966, in Newport, Rhode Island) is an American Grammy-nominated singer-songwriter and guitarist based in New England who co-founded Throwing Muses with her stepsister Kristin Hersh. She then went on to work in The Breeders and Belly in the 1990s. In the late 1990s, she settled into a solo recording career, working largely with musicians connected to the Boston music scene.

Donelly is best known for her Grammy nominated work in the mid-1990s as lead vocalist and songwriter for Belly, when she scored a national radio and music television hit with her composition "Feed the Tree". Belly recorded on Sire/Reprise Records and 4AD Records; Donelly's solo works have been released on Warner Bros. Records and 4AD.