Esthero (born Jenny-Bea Englishman, December 23, 1978 in Stratford, Ontario) is a Canadian singer-songwriter who hails originally from Toronto, Ontario, but has recently moved to Los Angeles. The name Esthero, pronounced [ɛsˈtɛroʊ] es-TAIR-oh, refers both to the singer and formerly to the two-person team of herself and producer, Doc. She claims to have gotten the name from an old film character named Esther, whose last line in a movie (The Bell Jar, based on the Sylvia Plath novel of the same name) is, "If I am to be the hero, then I cannot fly from darkness."

Esthero's sound characteristically features her voice over a mix of mellow bass lines, jazzy trumpets, Spanish guitar and hip-hop. She is sometimes compared to artists Björk, Portishead and Sade . Later artists who count Esthero among their influences include Res, Fergie and fellow Canadian Nelly Furtado.

Esthero's brother, Jason Englishman, is also a musician.