Marco da Gagliano (* May 1, 1582 in Florence; † February 25, 1643, ibid.) was an Italian composer of the early Baroque period. He was important for the development of opera and madrigal.
Gagliano was born in Florence and spent most of his life there. He was taught by Luca Bati, among others. At the beginning of 1602 he was employed as a singing teacher at the church of San Lorenzo for six years. In 1607 he founded the ''Accademia degli Elevati'' and went to Mantua where he wrote music for the ''House of Gonzaga'' including the opera ''Dafne''. Gagliano returned to Florence in 1608 (or 1609?) as successor to ''Bati'' Kapellmeister of the ''Compagnia dell'Arcangelo Raffaello'' where he had received his musical education. In 1611 (or 1608?) he became Kapellmeister at the court of the Medici which he was to remain until his death.
