El Árbol el Tule (Spanish for "the Tule Tree") is a tree located in the church grounds in the town center of Santa María del Tule in the Mexican state of Oaxaca, approximately 9 km east of the city of Oaxaca on the road to Mitla. It is a Montezuma Cypress (Taxodium mucronatum), or Ahuehuete in the Nahuatl language. It has the stoutest trunk of any tree in the world.