Philippe Verdelot (1480 to 1485 – c.1530 to 1532?) was a French composer of the Renaissance, who spent most of his life in Italy. He is commonly considered to be the father of the Italian madrigal, and certainly was one of its earliest and most prolific composers; in addition he was prominent in the musical life of Florence during the period after the recapture of the city by the Medici from the followers of Girolamo Savonarola.
Verdelot was born Les Loges, Seine-et-Marne, France. Details of his early life are obscure. He probably came to Italy at an early age, spending the first decade or two of the 16th century at some cities in northern Italy, most likely including Venice. A painting of 1511, described by Vasari but never positively identified, is believed by many musicologists to show Verdelot in Venice with an Italian singer.
Verdelot is known to have been maestro di cappella at the Baptisterium San Giovanni in Florence from 1523 to 1525; and he seems also to have been employed at the Cathedral there, from 1523 until 1527. In 1526 he collaborated with Niccolò Machiavelli on a production of Machiavelli's famous cynical comedy La Mandragola. While the play was written in 1518, the 1526 performance in Florence was dedicated to the Medici pope, Clement VII. Both Machiavelli, expelled from Florence by the Medici, and Verdelot, generally sided with the Florentine Republic against the Medici, but attempted to play the delicate political game of pleasing both sides. The several pieces which Verdelot wrote for Machiavelli's play, while called canzone, are considered to be the earliest madrigals. 
Verdelot may have been killed in the siege of Florence (1529-1530) since there is no definite evidence that he was alive after 1530. Some scholars infer that he was alive until about 1540, based on some ambiguous references to contemporary events in his works published during the 1530s. Several books of madrigals published in Venice in the late 1530s include his work; one of these books is devoted entirely to him. Possibly he moved to Venice after the siege to escape the notoriously vengeful, and victorious, Medici. He is known to have been dead by 1552, when writer Ortenzo Landi mentioned him as being deceased.
Verdelot, along with Costanzo Festa, is considered to be the father of the madrigal, an a cappella vocal form which emerged in the late 1520s from a convergence of several previous musical streams (including the frottola, the canzone, the laude, and also including some influence from the more serious style of the motet).
Verdelot's style balances homophonic with imitative textures, rarely using word-painting, which was largely a later development (though a few interesting foreshadowings can be found). Most of his madrigals are for five or six voices.
Verdelot's madrigals were hugely popular, as can be inferred from their frequency of reprinting and their wide dissemination throughout Europe in the 16th century. He also composed motets and masses.