Trentino-Alto Adige/Südtirol (Italian: Trentino-Alto Adige, also Trentino-Sudtirolo or Trentino-Sud Tirolo; German: Trentino-Südtirol; Ladin: Trentin-Sudtirol, also Trentin-Adesc Aut) is an autonomous region in Northern Italy. It consists of two provinces: Trento and Bolzano-Bozen, where in the latter the majority of the population speak German as their first language.
The region was part of Austria-Hungary (and its predecessor, the Austrian Empire) from 1803 until its annexation by Italy in 1919. It was officially referred to as Venezia Tridentina between 1919 and 1947 and Trentino-Alto Adige/Tiroler Etschland between 1947 and 1972.
In English, the commonly used term is Trentino-Alto Adige; Trentino-South Tyrol is also sometimes used. Together with the Austrian state of Tyrol it is represented by the Euroregion Tirol-Südtirol/Alto Adige-Trentino.
Trentino Alto Adige is famous for its Dolomites Alps and for the ski resorts.