Giovanni Martino Cesare (Udine, c.1590 – Munich, 6 February 1667) was a composer and cornett player. By 1611 (his first publication) he resided as cornetto player at the house of Charles, Margrave of Burgau (d.1618) at Günzburg, near Augsburg. In 1615 he became an employee of Duke Maximilian of Bavaria (Munich) as a cornettist, where he wrote his best known collection Musicali melodie (1621). It contains 14 instrumental canzonas of one to six parts with continuo, and 14 motets.