Lusia is a comune (municipality) in the Province of Rovigo in the Italian region Veneto, located about southwest of Venice and about northwest of Rovigo. As of 31 December 2004, it had a population of 3,623 and an area of .
The municipality of Lusia contains the frazioni (subdivisions, mainly villages and hamlets) Alberone, Arzaron, Bornio, Ca'Morosini, Cavazzana, Ceresolo-Santa Lucia, Contra' Nova, Garzare, Giare, Marasso, Pioppello, and Saline.
Lusia borders the following municipalities: Barbona, Lendinara, Rovigo, Sant'Urbano, Villanova del Ghebbo.