Tesero (German:Teser im Fleimstal) is a comune (municipality) in Trentino in the northern Italian region Trentino-Alto Adige/Südtirol, located in the Val di Fiemme about 40 kilometres (25mi) northeast of Trento. As of 31 December 2004, it had a population of 2,710 and an area of 50.4 square kilometres (19.5sqmi).