Onix

Onix may refer to:


 * ONIX (publishing protocol), XML metadata formats for book publishers
 * Onix (Pokémon), a fictional species in the Pokémon franchise
 * Chevrolet Onix, a subcompact car
 * Onix, a synonym of the legume genus Astragalus

People

 * Onix Cortés (born 1988), judoka from Cuba
 * Onix Concepción (born 1957), Puerto Rican Major League Baseball shortstop