The Hilliard Ensemble is a British male vocal quartet originally devoted to the performance of early music. Founded in 1974, the group is named after the Elizabethan miniaturist painter Nicholas Hilliard.

Although most of its work focuses on music of the Medieval and Renaissance periods, the Hilliard Ensemble also performs contemporary music, working frequently with the Estonian composer Arvo Pärt and including in its concerts works by John Cage, Gavin Bryars, Giya Kancheli, and Heinz Holliger.