Ek Chuaj, also known as Ek Chuah, Ekchuah, God M according to the Schellhas-Zimmermann-Taube classification of codical gods, is a Postclassic Maya merchant deity as well as a patron of cacao. Ek Chuaj is part of a pantheon of Maya deities that have been depicted in hieroglyphs and artwork of various Maya sites and has been interpreted as a significant part of Maya religion.
Ek Chuaj can either be depicted as black-and-white striped, as he is in the Dresden Codex, or entirely black, as he is in the Madrid Codex. Other distinguishing characteristics of Ek Chuaj are his mouth, which is encircled by a red-brown border, his large lower lip, and the presence of two curved lines to the right of his eye. Other depictions of Ek Chuaj show him as an old man with only a single tooth. This is the appearance he most regularly takes in the Madrid Codex. He has been depicted with a pack of goods commonly carried by merchants, and his carrying of a burden is also indicated by the rope or tumpline tied around his head. He may also carry a spear and, in some instances, a scorpion's tail.
Ek Chuaj holds various meanings depending upon the contexts in which he is depicted. His principal associations are with trade and cacao use.
Ek Chuaj is often depicted carrying a pack and a spear, indicating transportation of goods as well as the dangerous life of a merchant. In this context, Ek Chuaj is a patron deity of travelers and journeys. During journeys, travelers would stack three stones on top of each other and offer incense to Ek Chuaj at night to ensure a safe journey home. It is possible that Ek Chuaj and the "Guide of the Merchant," otherwise known as Polaris or the North Star, are related both symbolically and linguistically. "Ek" can be translated as either "black" or "star".
Cacao was one of the most important products traded by Maya merchants and it was often treated as currency. Because Ek Chuaj is a patron of cacao, owners of cacao groves would hold ceremonies or special festivals in his honor. One of these was held during Muwan, a "month" in the Maya solar calendar or haab'. The presence of this ceremony suggests that Ek Chuaj was an agriculturally symbolic deity within Maya society.