Tancanhuitz is a town and one of the 58 municipalities of the state of San Luis Potosí in central Mexico.

[2] It is located in the southeastern part of the state, approximately 330 km (210 mi) from the city of San Luis Potosí.

[4][5] In 1932, the state government established the location as a city with the name Pedro Antonio Santos.

[6] Tancanhuitz is located in the southeastern part of the state, at 21° 36’ northern latitude, and 98° 58’ western longitude.

*The geology of the region is classified as Mesozoic,* and the land is used primarily for raising livestock, forestry, and agriculture.