The Indo-Aryan migrations were the migrations into the Indian subcontinent of Indo-Aryan peoples, an ethnolinguistic group that spoke Indo-Aryan languages.
These are the predominant languages of today's Bangladesh, Maldives, Nepal, North India, Pakistan, and Sri Lanka.[3]
Indo-Aryan migration into the region, from Central Asia, is considered to have started after 2000 BCE as a slow diffusion during the Late Harappan period and led to a language shift in the northern Indian subcontinent.
Several hundred years later, the Iranian languages were brought into the Iranian plateau by the Iranians, who were closely related to the Indo-Aryans.