Ancient Egyptian religion was a complex system of polytheistic beliefs and rituals that formed an integral part of ancient Egyptian culture. It centered on the Egyptians' interactions with many deities believed to be present and in control of the world. About 1500 deities are known. Rituals such as prayer and offerings were provided to the gods to gain their favor. Formal religious practice centered on the pharaohs, the rulers of Egypt, believed to possess divine powers by virtue of their positions. They acted as intermediaries between their people and the gods, and were obligated to sustain the gods through rituals and offerings so that they could maintain Ma'at, the order of the cosmos, and repel Isfet, which was chaos. The state dedicated enormous resources to religious rituals and to the construction of temples.

Polytheism is the belief in or worship of more than one god. According to Oxford Reference, it is not easy to count gods, and so not always obvious whether an apparently polytheistic religion, such as Chinese Folk Religions, is really so, or whether the apparent different objects of worship are to be thought of as manifestations of a singular divinity. Polytheistic belief is usually assembled into a pantheon of gods and goddesses, along with their own religious sects and rituals. Polytheism is a type of theism. Within theism, it contrasts with monotheism, the belief in a singular God who is, in most cases, transcendent.