What was ancient Egypts religion called?
Being Egyptian. The separation of religious beliefs from other aspects of daily life in a given culture is mostly a modern phenomenon, and almost always something that happens from the outside, not the inside. Most contemporaries would have considered following Egyptian practices part of a person “being Egyptian” if they had come in contact with the culture (this would have mostly been traders). The exception might have been the Israelites, who were nomadic but a rarity as their “state religion” was monotheistic. (Ok, there was that weird “monotheistic” Pharoh Aknaten, but I’d barely count him.) They may have had a name for the Egyptian religious practices, but it wouldn’t have been very nice.