Costanzo Festa (c. 1485/1490 – 10 April 1545) was an Italian composer of the Renaissance. While he is best known for his madrigals, he also wrote sacred vocal music. He was the first native Italian polyphonist of international renown, and with Philippe Verdelot, one of the first to write madrigals, in the infancy of that most popular of all sixteenth-century Italian musical forms.