This is probably the most definite yes you can have on this sub.

Ancient Egypt was an extremely diverse society, with an extremely long history. If you're wondering if people who we'd call black today were wandering around ancient Egypt, there were.

Starting with the absolute basics, trade is a thing. Merchants from today's Sudan and Ethiopia were a fixture throughout Ancient Egypt--from the Old Kingdom onwards. Military exchange is also a thing--Libyans were present as prisoners of war, mercenaries, and just regular soldiers passing through.

Even more than trade and random black citizenry, you have several instances of (what would be considered today) black rulers. The 25th Dynasty is known as the Nubian Dynasty or the Kushite Empire, because the rulers came from far south.

Outside of them, you've also got the 17th Dynasty and the 18th Dynasty (the one with King Tut), both of whom were native to Thebes, in Southern Egypt. Members are consistently depicted as black rather than red, which implies Southern/Nubian ancestry rather than Northern Egyptian. HOWEVER, don't put too too much stock into the black/red distinction, because that was mostly about nationality vs race--so there were "red" peoples who we'd consider black, and "black" peoples who we'd consider brown. But, a good example of a black person who was also painted black is Ahmose-Nefertari.

Later in the 18th Dynasty, we get into some more accurate art with Akenaten, who looked like this. His mom, Queen Tiye, looked liked this. Her parents (Yuya and Tjuyu) were considered fully Egyptian, and NOT foreigners or immigrants--her mom was also said to have descended from Ahmose-Nefertari up there. His dad looked like this.

(the reason why this art is more accurate is a bit complex so I'll hold off unless someone asks).

There's also some figures whose blackness is disputed, like Narmer and the other kings of Upper (Southern) Egypt.

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Sources:

Shaw, Ian, The Oxford History of Ancient Egypt

Wendorf, Fred and Schild, Romuald, Late Neolithic megalithic structures at Nabta Playa (Sahara), southwestern Egypt.

University College London, Foreign Relations in Pre- and Early Dynastic Egypt.

University College London*,* Nubia: Nubians in Egypt.

Adams, William, Nubia, Corridor to Africa, London

Bates, Oric, The Eastern Libyans.

Barbara G. Aston, James A. Harrell, Ian Shaw, Ancient Egyptian Materials and Technology

Asiatic Society, Asiatic Society Monograph Series, Volume 15

Tyldesley, Joyce. Chronicle of the Queens of Egypt