Tenna (German: Atzenach or Tann) is a comune (municipality) in Trentino in the northern Italian region Trentino-Alto Adige/Südtirol, located about 13 kilometres (8 mi) southeast of Trento. As of 31 December 2004, it had a population of 918 and an area of 3.1 square kilometres (1.2 sq mi).Tenna borders the following municipalities: Pergine Valsugana, Levico Terme and Caldonazzo.