The Sierra Juárez is a range of mountains in Oaxaca state, Mexico between latitudes 17°20'-17°50'N and longitudes 96°15'-97°00'W, with an area of about 1,700 km2 (660 sq mi).

The range is separated from the Sierra de Zongólica to the north by the Santo Domingo River, flowing through the Tecomavaca Canyon.

The range is named after Mexico's only indigenous president, Benito Juárez, who was born here in 1806 in the small village of San Pablo Guelatao.

They are formed of folded sedimentary rocks with series of younger granitic intrusions that date from the Palaeozoic to Cenozoic, with the majority being Mesozoic.

[1] The Sierra Juárez is home to threatened mammals such as jaguar (Panthera onca), ocelot (Leopardus pardalis), and brocket deer (genus Mazama).

[1] However, the region promotes ecotourism to help preserve the biosphere with various enterprises offering cabins, camping, access and guides for hiking and mountain-biking trails, horseback riding, bird-watching, and cave exploration.