Iranian peoples, or Iranic peoples, are the collective ethnolinguistic groups who are identified chiefly by their native usage of any of the Iranian languages, which are a branch of the Indo-Iranian languages within the Indo-European language family.
The Proto-Iranians are believed to have emerged as a separate branch of the Indo-Iranians in Central Asia around the mid-2nd millennium BC. At their peak of expansion in the mid-1st millennium BC, the territory of the Iranian peoples stretched across the entire Eurasian Steppe; from the Danubian Plains in the west to the Ordos Plateau in the east and the Iranian Plateau in the south.
The ancient Iranian peoples who emerged after the 1st millennium BC include the Alans, the Bactrians, the Dahae, the Khwarazmians, the Massagetae, the Medes, the Parthians, the Persians, the Sagartians, the Saka, the Sarmatians, the Scythians, the Sogdians, and likely the Cimmerians, among other Iranian-speaking peoples of West Asia, Central Asia, Eastern Europe, and the Eastern Steppe.
In the 1st millennium AD, their area of settlement, which was mainly concentrated in the steppes and deserts of Eurasia, was significantly reduced due to the expansion of the Slavic peoples, the Germanic peoples, the Turkic peoples, and the Mongolic peoples; many were subjected to Slavicization and Turkification. Modern Iranian peoples include the Baloch, the Gilaks, the Kurds, the Lurs, the Mazanderanis, the Ossetians, the Pamiris, the Pashtuns, the Persians, the Tats, the Tajiks, the Talysh, the Wakhis, the Yaghnobis, and the Zazas. Their current distribution spreads across the Iranian Plateau – stretching from the Caucasus in the north to the Persian Gulf in the south and from eastern Anatolia in the west to western Xinjiang in the east – covering a region that is sometimes called Greater Iran, representing the extent of the Iranian-speaking peoples and the reach of their geopolitical and cultural influence.