Lol a 30 second google search would have helped you know what you’re talking about.
Although Persian (Farsi) is the predominant and official language of Iran, a number of languages and dialects from three language families—Indo-European, Altaic, and Afro-Asiatic—are spoken.
Persian is the official language of Iran and is spoken by over 50% of the country's population.
The Persian language can also be known as Farsi, and the dialect has evolved from Middle Persian. The Middle Persian language broke the Arabic monopoly on writing in the area