Geographic groups: Africa, Balkans, Caucasus, Central Asia, Europe, Italy, Middle East, Saudi Arabia, South Asia, Turkey.b
Linguistic groups: Albanian, Armenian, Austro-Asiatic, Burushaski, Cushitic, Dravidian, Georgian, Greek, Indo-Iranian, Italic, Semitic, Slavic, Tibeto-Burman, Turkic, Uralic.c
Ethnic groups: Afro-Iranians+Bandari, Arabs, Armenians, Assyrians, Azeris, Baluchs, Qeshmi, Gilaks, Kurds, Lurs, Mazandarani, Persians, Turkmens, and Zoroastrians.d
Geographic groups: Azerbaijan Gharbi, Fars, Gilan, Golestan, Hormozgan, Isfahan, Khorasan, Khuzestan, Kurdistan, Lorestan, Mazandaran, Sistan Baluchestan, Tehran, Yazd.e
Linguistic groups: Altaic (Golestan), Arab (Khuzestan), Armenian (Tehran Armenians), Assyrian (Azerbaijan Gharbi+Tehran Assyrians), Baluch (Sistan Baluchestan), Caspian (Gilan+Mazandaran), NW Iranian branch (Azeri+Kurds), Persian (Fars+Hormozgan+Isfahan+Khorasan+Yazd+Tehran Zoroastrians), SW Iranian branch (Lorestan).f
Religious groups: Muslim, Zoroastrian and Christian.