In An Illustrated Dictionary of the Gods and Symbols of Ancient Mexico and the Maya, Miller and Taube list eight deities:
The Storm God
The Great Goddess
The Feathered Serpent.
An important deity in Teotihuacan; most closely associated with the Feathered Serpent Pyramid (Temple of the Feathered Serpent).

The Old God
The War Serpent.
Taube has differentiated two different serpent deities whose depictions alternate on the Feathered Serpent Pyramid: the Feathered Serpent and what he calls the "War Serpent".
Other researchers are more skeptical.

The Netted Jaguar
The Pulque God
The Fat God.
Known primarily from figurines and so assumed to be related to household rituals.

Esther Pasztory adds one more:
The Flayed God.
Known primarily from figurines and so assumed to be related to household rituals.

The consensus among scholars is that the primary deity of Teotihuacan was the Great Goddess of Teotihuacan.
The dominant civic architecture is the pyramid.
Politics were based on the state religion; religious leaders were the political leaders.
Religious leaders would commission artists to create religious artworks for ceremonies and rituals.
The artwork likely commissioned would have been a mural or a censer depicting gods like the Great Goddess of Teotihuacan or the Feathered Serpent.
Censers would be lit during religious rituals to invoke the gods including rituals with human sacrifice.

Teotihuacanos practiced human sacrifice: human bodies and animal sacrifices have been found during excavations of the pyramids at Teotihuacan.
Scholars believe that the people offered human sacrifices as part of a dedication when buildings were expanded or constructed.
The victims were probably enemy warriors captured in battle and brought to the city for ritual sacrifice to ensure the city could prosper.
Some men were decapitated, some had their hearts removed, others were killed by being hit several times over the head, and some were buried alive.
Animals that were considered sacred and represented mythical powers and military were also buried alive, imprisoned in cages: cougars, a wolf, eagles, a falcon, an owl, and even venomous snakes.

Numerous stone masks have been found at Teotihuacan, and have been generally believed to have been used during a funerary context, although some scholars call this into question, noting that masks "do not seem to have come from burials".
In An Illustrated Dictionary of the Gods and Symbols of Ancient Mexico and the Maya, Miller and Taube list eight deities:
The Storm God
The Great Goddess
The Feathered Serpent. An important deity in Teotihuacan; most closely associated with the Feathered Serpent Pyramid (Temple of the Feathered Serpent).
The Old God
The War Serpent. Taube has differentiated two different serpent deities whose depictions alternate on the Feathered Serpent Pyramid: the Feathered Serpent and what he calls the "War Serpent". Other researchers are more skeptical.
The Netted Jaguar
The Pulque God
The Fat God. Known primarily from figurines and so assumed to be related to household rituals.
Esther Pasztory adds one more:
The Flayed God. Known primarily from figurines and so assumed to be related to household rituals.
The consensus among scholars is that the primary deity of Teotihuacan was the Great Goddess of Teotihuacan. The dominant civic architecture is the pyramid. Politics were based on the state religion; religious leaders were the political leaders. Religious leaders would commission artists to create religious artworks for ceremonies and rituals. The artwork likely commissioned would have been a mural or a censer depicting gods like the Great Goddess of Teotihuacan or the Feathered Serpent. Censers would be lit during religious rituals to invoke the gods including rituals with human sacrifice.
Teotihuacanos practiced human sacrifice: human bodies and animal sacrifices have been found during excavations of the pyramids at Teotihuacan. Scholars believe that the people offered human sacrifices as part of a dedication when buildings were expanded or constructed. The victims were probably enemy warriors captured in battle and brought to the city for ritual sacrifice to ensure the city could prosper. Some men were decapitated, some had their hearts removed, others were killed by being hit several times over the head, and some were buried alive. Animals that were considered sacred and represented mythical powers and military were also buried alive, imprisoned in cages: cougars, a wolf, eagles, a falcon, an owl, and even venomous snakes.
Numerous stone masks have been found at Teotihuacan, and have been generally believed to have been used during a funerary context, although some scholars call this into question, noting that masks "do not seem to have come from burials".
Teotihuacan