The Trentino, officially the Autonomous Province of Trento, is an autonomous province of Italy, in the country's far north. The Trentino is, along with South Tyrol, one of the two provinces making up the region of Trentino-Alto Adige/Südtirol, which is designated an autonomous region under the constitution. The province is divided into 177 comuni (municipalities). Its capital is the city of Trento. The province covers an area of more than 6,000 km² (2,300 sq mi), with a total population of about 540,000. The Trentino is renowned for its mountains, such as the Dolomites, which are part of the Alps.

The province is generally known as the Trentino. The name derives from Trento, the capital city of the province. Originally, the term was used by the local population only to refer to the city and its immediate surroundings. Under former Austrian government, which began in the 19th century (previously the Trentino was governed by the local bishop), the common German name for the region was Welschtirol or Welschsüdtirol, meaning Italian Tyrol or Italian South Tyrol, or just Südtirol, meaning South Tyrol with reference to its geographic position as the southern part of Tyrol.

The corresponding Italian terms were Tirolo Meridionale, that was historically used to describe the wider southern part of the County of Tyrol, specifically the Trentino and sometimes also today's South Tyrol, or Tirolo Italiano. In its wider sense, Trentino was first used around 1848 in an article by a member of the Frankfurt National Assembly; it became a popular term among leftist intellectual circles in Austria.

Since the new 1972 autonomous status, the administrative name of the province is Autonomous Province of Trento (Italian: Provincia autonoma di Trento, [Autonome Provinz Trient] error: {{lang-xx}}: text has italic markup (help)).

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