San Juan Achiutla is a town and municipality in Oaxaca in south-western Mexico. The municipality covers an area of 49.76 km². It’s located in a mountain range, between the hills Negro to the East, Yucuquise to the Northwest, Cuate to the North and Totolote to the South. It’s crossed by the river Los Sabinos and has a dam called Cahuayande. Its climate is temperate.