- Language: Chichimeca-Jonaz
- Alternate names: Meco, Pame de Chichimeca-Jonaz
- Language code: pei
- Language family: Otomanguean, Western Otomanguean, Otopame-Chinantecan, Otopamean
- Number of speakers: 1360
- Script: Unwritten.
Chichimeca or Chichimeca Jonaz is an indigenous language of Mexico spoken by around 200 Chichimeca Jonaz people in Misión de Chichimecas near San Luis de la Paz in the state of Guanajuato, Mexico. The Chichimeca Jonaz language belongs to the Oto-Pamean branch of the Oto-Manguean language family. The Chichimecos self identify as úza and call their language eza'r.