Persian (/ ˈ p ɜːr ʒ ən,-ʃ ən /), also known by its endonym Farsi (فارسی, Fārsī, [fɒːɾˈsiː] ()), 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 ...