Acinonyx is a genus of mammals from the family Felidae. It is currently distributed in Africa and Asia, but used to be present in Europe too. Wozencraft (1993) put the genus Acinonyx in their own monophyletic subfamily, Acinonychinae. Salles (1992), Johnson & O'Brien (1997), Bininda-Emonds et al. (1999), and Mattern and McLennan (2000) consider Acinonyx, Puma concolor, and Puma (= Herpailurus) yagouaroundi as representatives of closely related sister groups.