Which country is named "Misr" or "Masr" in its language?

The English name Egypt is derived from the Ancient Greek Aígyptos, but it has nothing in common with the local name of the country (except maybe with the Late Egyptian name of Memphis - Hikuptah). Ancient Egyptians called their land Kemet, meaning "black soil" (as opposed to the desert). Today, Misr is the official name of Egypt, while Masr is the Egyptian-local pronunciation in the Egyptian Arabic.