Prettau ([prɛtaʊ̯]; Italian: Predoi) is a municipality with a population of 571 (December 31, 2015) in the Aurina Valley in South Tyrol (Italy). It is in the rearmost portion of the Ahr valley and is the northernmost town in Italy. 70\% of the municipal area are located in the Rieserferner-Ahrn. The community consists of the main village and the hamlet of Prettau Kasern.