A chacmool is a form of pre-Columbian Mesoamerican sculpture depicting a reclining figure with its head facing 90 degrees from the front, supporting itself on its elbows and supporting a bowl or a disk upon its stomach. These figures possibly symbolised slain warriors carrying offerings to the gods; the bowl upon the chest was used to hold sacrificial offerings, including pulque, tamales, tortillas, tobacco, turkeys, feathers, and incense. In Aztec examples, the receptacle is a cuauhxicalli. Chacmools were often associated with sacrificial stones or thrones. The chacmool form of sculpture first appeared around the 9th century AD in the Valley of Mexico and the northern Yucatán Peninsula.

Human sacrifice was common in many parts of Mesoamerica, so the rite was nothing new to the Aztecs when they arrived at the Valley of Mexico, nor was it something unique to pre-Columbian Mexico. Other Mesoamerican cultures, such as the Purépechas and Toltecs, and the Maya performed sacrifices as well and from archaeological evidence, it probably existed since the time of the Olmecs, and perhaps even throughout the early farming cultures of the region. However, the extent of human sacrifice is unknown among several Mesoamerican civilizations. What distinguished Aztec practice from Maya human sacrifice was the way in which it was embedded in everyday life. These cultures also notably sacrificed elements of their own population to the gods.