San Juan Quiahije Chatino (SJQ) is an Eastern Chatino language spoken in the municipality of San Juan Quiahije (16° 18′ N 97° W) in the mountains of Oaxaca, Mexico.
The Chatino languages are grouped to together with the Zapotec languages to form the Zapotecan branch of the Otomanguean language family (Kaufman 1993, Rensch 1966).