Vallarsa (Cimbrian: Brandtal) is a comune (municipality) in Trentino in the northern Italian region Trentino-Alto Adige/Südtirol, located about 30 kilometres (19mi) south of Trento. As of 31 December 2004, it had a population of 1,409 and an area of 78.3 square kilometres (30.2sqmi).