San Juan Bautista Coixtlahuaca is a small town and municipality situated in the Mixteca Region of the State of Oaxaca, Mexico. It serves as the administrative center of the Coixtlahuaca district.
The name Coixtlahuaca translates to "plain of snakes" in the Nahuatl language. The area is historically significant for its indigenous cultural heritage, notably housing one of the region's most important pictorial manuscripts, known as the Lienzo Seler Coixtlahuaca II.