Teojomulco Chatino is an extinct Oto-Manguean language, the most divergent of the Chatino languages, formerly spoken in the town of Teojomulco. Belmar (1902) has the only extant data on the language, a wordlist of 228 words and phrases. It is possible that the speakers who supplied the wordlist were the last speakers of the language, since there were no speakers left by the middle of the 20th century.