Persianization or Persification, is a sociological process of cultural change in which a non-Persian society becomes "Persianate", meaning it either directly adopts or becomes strongly influenced by the Persian language, culture, literature, art, music, and identity as well as other socio-cultural factors. It is a specific form of cultural assimilation that often includes a language shift. The term applies not only to cultures, but also to individuals, as they acclimate to Persian culture and become "Persianized" or "Persified".

Persian, also known by its endonym Farsi or Parsi, is a Western Iranian language belonging to the Iranian branch of the Indo-Iranian subdivision of the Indo-European languages. Persian is a pluricentric language predominantly spoken and used officially within Iran, Afghanistan, and Tajikistan in three mutually intelligible standard varieties, respectively Iranian Persian, Dari Persian, and Tajiki Persian. It is also spoken natively in the Tajik variety by a significant population within Uzbekistan, as well as within other regions with a Persianate history in the cultural sphere of Greater Iran. It is written officially within Iran and Afghanistan in the Persian alphabet, a derivative of the Arabic script, and within Tajikistan in the Tajik alphabet, a derivative of the Cyrillic script.