Luz Casal (Spanish pronunciation: [luθ kaˈsal]; born November 11, 1958 at Boimorto) is a Spanish pop singer. She grew up in neighbouring Asturias, took singing, piano and ballet classes, and moved to Madrid to pursue a career as a musician.

She became famous in the early 1980s, and remained an important figure in Spanish pop music all through said decade and beyond, with her sound gradually maturing towards soft adult pop. She recorded a cover version of Étienne Daho's French language song "Duel au Soleil" in Spanish called "Un nuevo día brillará", which became a hit song. Since the beginning of her career, she has sold over five million albums.