- Language: Achuar
- Alternate names: Achual, Achuar-Shiwiar, Achuale, Achuara, Jívaro, Maina
- Language code: acu
- Language family: Jivaroan, Jívaro (SIL classification)
- Number of speakers: 5,443
- Vulnerability: Threatened
- Script: Latin script.
Kaufman (2007: 69) considers Jívaro a “language area” with two emergent languages, Jívaro and Aguaruna. Shuar, Achuar, Aguaruna, and Huambisa are closely related languages or dialects of a single language.