Tassullo (Ladin: Tasul, German: Tassul) is a frazione of the municipality of Ville d'Anaunia (municipality) in Trentino in the northern Italian region Trentino-Alto Adige/Südtirol, located about 42 kilometres (26 mi) north of Trento. As of 31 December 2004, it had a population of 1,856 and an area of 13.5 square kilometres (5.2 sq mi).