The Mass for Four Voices is a choral Mass setting by the English composer William Byrd (c.1540–1623). It was written around 1592–1593 during the reign of Queen Elizabeth I, and is one of three settings of the Mass Ordinary which he published in London in the early 1590s. It consists of the text of the Mass (Kyrie, Gloria, Credo, Sanctus & Benedictus, Agnus Dei) set for a four-part choir. The work is a noted example of English Renaissance music from the Tudor period.