The Maya death gods (also Ah Puch, Ah Cimih, Ah Cizin, Hun Ahau, Kimi, or Yum Kimil) known by a variety of names, are two basic types of death gods who are respectively represented by the 16th-century Yucatec deities Hunhau and Uacmitun Ahau mentioned by Spanish Bishop Diego de Landa. Hunhau is the lord of the Underworld. Iconographically, Hunhau and Uacmitun Ahau correspond to the Gods A and A' ("A prime"). In recent narratives, particularly in the oral tradition of the Lacandon people, there is only one death god (called "Kisin" in Lacandon), who acts as the antipode of the Upper God in the creation of the world and of the human body and soul. This death god inhabits an Underworld that is also the world of the dead. As a ruler over the world of the dead (Metnal or Xibalba), the principal death god corresponds to the Aztec deity Mictlāntēcutli. The Popol Vuh has two leading death gods, but these two are really one: Both are called "Death," but while one is known as "One Death," the other is called "Seven Death." They were vanquished by the Hero Twins.

The two principal death gods count among the many were-animals and spooks (wayob) inhabiting the Underworld, with the God A way in particular manifesting himself as a head hunter and a deer hunter. Ah Puch was banished after he broke his promise with the Maya king and was sent to the storm that would bring him to earth forever.

Kisin is the name of the death god among the Lacandons as well as the early colonial Choles, kis being a root with meanings like "flatulence" and "stench." Landa uses another name and calls the lord of the Underworld and "prince of the devils" Hunhau, a name that, recurring in early Yucatec dictionaries as Humhau and Cumhau, is not to be confused with Hun-Ahau; hau, or haw, means 'to end' and 'to lay on its back (mouth up)'. Other names include Yum Kimil, "Lord of Death" in Yucatán and (Ah) Pukuh in Chiapas. The name Hun Ahau ("One Lord") appears frequently in the Ritual of the Bacabs, but is never specified as a death god. Ah Puch, though often mentioned in books about the Mayas, does not appear to be an authentic Maya name for the death god. (An Ah Puch is mentioned in the opening of the Book of Chilam Balam of Chumayel in passing as a ruler of the North, and one of the Xibalba attendants in the Popol Vuh is called Ahal Puh.)

In the Popol Vuh, the Hero Twins descend to the "Place of Fright" (Xibalba), where a pair of Death Gods, Hun-Came ("One-Death") and Vucub-Came ("Seven-Death"), rule over a series of disease-bringing deities. They defeat the Death Gods and put restrictions on their cult.

According to one of the earliest sources on Maya religion (Francisco Hernández 1545), Eopuco (i.e., Ah Pukuh) mistreated and killed the Bacab, who was resurrected three days later.

The skeletal death god Kisin plays a prominent role in Lacandon mythology, chiefly in the following tales:

During the Classic period, his abdomen is sometimes replaced with out-pouring swirls of blood or rotting matter. He is usually accompanied by spiders, centipedes, scorpions, a vulture, an owl, and a bat. He is pictured with jewelry usually on his wrists and ankles. On his lower extremity, he has around "molo" sign that putrid smells of death. Over his head is a floating object shaped like an "S" probably an insect carrying a torch. On his forehead like other deities of the underworld he wears an "aqabal" also known as an emblem of "darkness." His head in Maya culture was used to represent the number 10, the lower jawbone meant the numeral ten that was inscribed within all other head variants of the numbers thirteen to nineteen. He was often pictured as dancing and holding a smoking cigarette. On his neck is a death collar which consists of embodied eyes hanging by their nerve cords. The black spots on his body represent the decay of the flesh. Since he is a rotting corpse in some images he is shown with a bloated stomach.

Both God A and God A' figure prominently in the New Year rites depicted in the Dresden Codex. God A' probably corresponds to the death god Uacmitun Ahau in Landa's description of the New year rites. He presides over a year of great mortality. To ward off evil during this year, men would walk over a bed of glowing embers that possibly represented the fires of the Underworld. Temple priests would get in costumes of God A' and performed rites of bloodletting and human sacrifice. Those who impersonated this deity would dance out the steps of ritual sacrifice, putting terror in the soul of ritual participants and the spectators who witnessed these sacred events.