The Zapotecan languages are a group of related Oto-Manguean languages which descend from the common proto-Zapotecan language spoken by the Zapotec people during the era of the dominance of Monte Albán.

The Zapotecan language group contains the Zapotec languages and the Chatino languages.

• Kaufman, Terrence. 2016. Proto-Sapotek(an) reconstructions. Project for the Documentation of the Languages of Mesoamerica.
• Kaufman, Terrence. 2015. A typologically odd phonological reconstruction for proto-Sapotekan: stem-final *k. Project for the Documentation of the Languages of Mesoamerica.