Egypt

Egypt was a pre-War country.

Fallout 2

 * The Great Ananias claims that he has a genuine Egyptian mummy, though it is actually Woody, a ghoul from Gecko, who has a tendency to fall asleep in unusual places.

Fallout 4

 * Lorenzo Cabot hired a team of experienced Egyptian excavators to help him find the lost city of Ubar in the Rub' al Khali.
 * Jack Cabot mentions Egypt among the other cradles of civilization, Sumer and Assyria.

Fallout 76

 * In the Mistress of Mystery comic book series, the titular character travels to Egypt twice, the second to vanquish the cult of the Unseen Seer.
 * A question in the Pioneer Scouts entomologist exam asks, "Which of these insects was especially sacred to the ancient Egyptians?", with the correct answer being the scarab beetle.
 * A question in the Pioneer Scouts mammologist exam asks, "Snippers is a good house cat. He eats his food and uses his litter box, just like he's supposed to. Which ancient country can we thank for domesticating cats like Snippers?", with the correct answer being Egypt.
 * Three questions in the Pioneer Scouts archaeologist exam reference ancient Egypt. The first asks, "Brendan went to a museum exhibit in Europe and saw a very famous rock. He says it was used to decipher ancient Egyptian hieroglyphics! What rock is he referring to?", with the correct answer being the Rosetta Stone, a large tablet with the same speech translated in both Greek and Egyptian, instrumental in the deciphering of hieroglyphics. Another asks, "You're excavating an ancient Egyptian tomb, and come across a scroll with old writing on it! What material is the scroll most likely made of?", with the answer being papyrus. The last asks, "Hannah wants to hunt for lost tombs. Whose undiscovered tomb should she go looking for?", with Tutankhamen provided as an incorrect answer.
 * Smiley compares a stack of gold bullion to the ancient pyramids of Egypt in a conversation.

Appearances
Egypt is mentioned in Fallout 2, Fallout 4, and Fallout 76.