San Jacinto Tlacotepec

 San Jacinto Tlacotepec  is a town and municipality in Oaxaca in south-western Mexico. The municipality covers an area of 233.5 km². It is part of the Sola de Vega District in the Sierra Sur Region.

Demography
As of 2005, the municipality had a total population of 2,145.

The local language, Zenzontepec Chatino, is also spoken in the municipality of Santa Cruz Zenzontepec and in the former municipality of Santa María Tlapanalquiahuitl.