Costermano sul Garda is a comune in the Province of Verona in the Italian region Veneto, located about 120 kilometres west of Venice and about 25 kilometres northwest of Verona. Costermano sul Garda borders the following municipalities: Affi, Bardolino, Caprino Veronese, Garda, Rivoli Veronese, San Zeno di Montagna, and Torri del Benaco.