Which language is Iran's official language?

Persian (Farsi) is the official and predominant language of Iran.12

While Persian serves as the primary language for literature, journalism, and science, the country is linguistically diverse. Iranians speak a variety of languages and dialects belonging to three major language families: Indo-European, Turkic, and Afro-Asiatic. For instance, approximately one-fourth of the population speaks Turkic languages, most notably Azerbaijani, while Arabic—a member of the Afro-Asiatic family—holds significant historical and religious importance.12