Mazaltepec Zapotec
{{Short description|Oto-Manguean language of Oaxaca, Mexico}}
{{Infobox language
|name=Mazaltepec Zapotec
|altname=(Santo Tomás Mazaltepec)
|state=Mexico
|region=Oaxaca
|speakers= 2,200
|date = 1990 census
|ref = e18
|familycolor=Oto-Manguean
|fam1=Oto-Manguean
|fam2=Zapotecan
|fam3=Zapotec
|iso3=zpy
|glotto=maza1294
|glottorefname=Mazaltepec Zapotec
}}
Mazaltepec Zapotec, also known as Etla Zapotec, is a divergent Zapotec language of the Mexican state of Oaxaca. It stands apart from other varieties of Zapotec; it has only 10% intelligibility with San Juan Guelavía Zapotec (at least with some varieties, as that may not be a single language), but zero intelligibility with other varieties of Zapotec that have been tested. The moribund Tejalapan Zapotec may be closer.