Languages of Egypt
There are a number of languages spoken in Egypt, but Egyptian Arabic or "Masry" which literally means "Egyptian", is by far the most widely spoken in the country.
Demographics of Egypt
Arabic is the official language of Egypt, with the vast majority of Egyptians speaking Egyptian Arabic. In The Upper Nile valley, Sa'idi Arabic is prevalent. The Coptic language is used in the Coptic church for the majority of prayers, hymns, masses, and meditations. 
English widely understood as well as French.
Siwa language used in ethnic Berber tribal areas in the western desert (Siwa), and Nubian language is widely used among the ethnic Nubians in the southern areas.