Chaac 恰克 (神只)
- for the region on Io see Chaac-Camaxtli Region
Chaac (also spelled Chac or, in Classic Mayan, Chaahk [t͡ʃaːhk]) is the name of the Maya rain deity. With his lightning axe, Chaac strikes the clouds and produces thunder and rain. Chaac corresponds to Tlaloc among the Aztecs.