Coatlinchan is a town in the Mexican state of Mexico.
San Miguel Coatlinchán (in Nahuatl: Coatl, in, chantli, 'snake, possessive prefix, home' 'In the home of the snakes') is a locality of the state of Mexico, in the municipality of Texcoco. Nearby was the original location of the monolith of Tláloc, located today at the entrance of the National Museum of Anthropology in Mexico City.