Kaltern an der WeinstraÃÂe (; ), often abbreviated to Kaltern or Caldaro, is a municipality and a village in South Tyrol in northern Italy. It is about southwest of the city of Bolzano.
As of 30 November 2010, it had a population of 7,592 and an area of .
It is famous for its lake, the Kalterer See, and wine (Kalterersee Auslese or Lago di Caldaro scelto). The cuisine combines Italian and Tyrolean styles. The nearby Dolomites area is known for its hiking and climbing routes.
Kaltern borders the following municipalities: Eppan, Neumarkt, Tramin, Vadena, Amblar, Cavareno, Ruffrè-Mendola, and Sarnonico (the last four municipalities belong to the Trentino).
The municipality of Kaltern contains the frazioni (subdivisions, mainly villages and hamlets) Altenburg (Castelvecchio), Oberplanitzing (Pianizza di Sopra), Unterplanitzing (Pianizza di Sotto), St. Josef am See (San Giuseppe al Lago), St. Anton/Pfuss (San Antonio/Pozzo), St. Nikolaus (San Nicoló) and Mitterdorf (Villa di Mezzo).
The coat of arms, used by the end of the 16th century, is a copper kettle with a handle on argent background.
According to the 2024 census, 91.55% of the population speak German, 7.93% Italian and 0.51% Ladin as first language.
Kaltern an der WeinstraÃÂe is twinned with: