Cavallino-Treporti is a town and comune in the Metropolitan City of Venice, Veneto, northern Italy. The commune occupies a peninsula, which divides the Venetian Lagoon from the Adriatic Sea. The river Sile forms the north-eastern boundary with the comune of Jesolo. The comune is composed of several boroughs, including Cavallino, Treporti, Punta Sabbioni and others.