San Martin de Tor ( ; ) is a comune (municipality) and a village in South Tyrol in northern Italy, located about northeast of the city of Bolzano.
As of 30 November 2010, it had a population of 1,726 and an area of .
San Martin is home to the Istitut Ladin Micuràde Rü, which is tasked with preserving and promoting the Ladin culture and language.
San Martin borders the following municipalities: Badia, Brixen, Corvara, La Val, Lüsen, Mareo, Santa Cristina Gherdëina, Sëlva and VillnöÃÂ.
The municipality contains the frazioni (subdivisions, mainly villages and hamlets) of Antermëia (Antermoia/Untermoi), Lungiarü (Longiarù/Campill), and Picolin (Piccolino/Pikolein).
The shield is party per cross: the first quarter represents an argent tower with an azure roof on sable; the second one is an argent cross pattée on gules, above three vert mountains. The third part of vert and the fourth of sable. The tower is a reference to Tor Castle and resumes the insignia of a noble family; the cross over the mountains recalls that the town was once the Courts.
According to the 2024 census, 92.78% of the population speak Ladin, 4.87% Italian and 2.35% German as first language.