Bilbeis (Arabic: بلبيس pronounced [belˈbeːs]; Bohairic Coptic: Ⲫⲉⲗⲃⲉⲥ/Ⲫⲉⲗⲃⲏⲥ Phelbes/Phelbēs) is an ancient fortress city on the eastern edge of the southern Nile Delta in Egypt, the site of the ancient city and former bishopric of Phelbes and a Latin Catholic titular see.

It also houses the Egyptian Air Force Academy complex, which contains the town's largest public school in Al-Zafer.

[citation needed] Situated on a caravan and natural invasion route from the east, Bilbeis was conquered in 640 by the Arabs.

Amr ibn al-As besieged and took the city defended by a Byzantine general called al-Ardubun.

Bilbeis is classified by Köppen-Geiger climate classification system as hot desert (BWh),[7] as the rest of Egypt.