Iranian Kurdistan or Eastern Kurdistan is an unofficial name for the parts of northwestern Iran with either a majority or sizable population of Kurds. Geographically, it includes the West Azerbaijan Province, Kurdistan Province, Kermanshah Province, Ilam Province and parts of Hamadan Province and Lorestan Province.

Kurdish is a Northwestern Iranian language or group of languages spoken by Kurds in the region of Kurdistan, namely in Turkey, northern Iraq, northwest and northeast Iran, and Syria.