Literature in Iran
Persian is Iran's official language and the language of the country's ethnic majority (i.e., the Persians), and Persian literature has been the country's most influential literary tradition. Apart from Iran, Persian literature was used and developed further through several medieval Persianate societies in Asia Minor, Central Asia, and South Asia, and the language is still used widely in Central Asia (Tajikistan and Uzbekistan) and Afghanistan.
Iranian languages
Middle Persian (Pahlavi) was the official language under the Sasanian dynasty in Iran. It was in use from the 3rd century CE until the beginning of the 10th century. The script used for Middle Persian in this era underwent significant maturity. Middle Persian, Parthian and Sogdian were also used as literary languages by the Manichaeans, whose texts also survive in various non-Iranian languages, from Latin to Chinese. Manichaean texts were written in a script closely akin to the Syriac script.