Upvote:-4
Cleopatra
She was also the last pharaoh: the practice lasted as long as there were pharaohs.
Upvote:1
Wikipedia suggests Maximinus Daza, Roman Emperor and Pharaoh of Egypt from 310 to 313 CE:
Maximinus Daza's status as a non-Christian accorded the priests of Egypt an opportunity to style him as Pharaoh, in the same manner that other foreign rulers of Egypt had been styled before.(...) Maximinus Daza would prove to be the last person afforded the title of Pharaoh – no Christian Roman/Byzantine emperor, nor Islamic leader, continued the ancient tradition of the pharaonic god-king of Egypt.
The title of pharaoh, given by Egyptian priests to Roman Emperors (as long as they were not Christian) was definitely a religious title, because having such a deity was required for their cult. People worshipping the ancient Egyptian religion considered pharaohs as deities, and actually the title disappearence in the 4th century coincides with the dwindling numbers of worshippers.
Meanwhile, political and administative elites didn't care: they just recognized an Emperor.