Which writing systems have been used for Iranian languages?

Iranian languages have utilized a diverse array of writing systems throughout their history, with various forms of Aramaic script serving as the most predominant foundation.1

Key writing systems include:

• Aramaic-derived scripts: These were used for Middle Persian, Parthian, Sogdian, and Old Khwārezmian. The Pahlavi script, used for Middle Persian, evolved from Aramaic, as did the elaborate Avestan script created by Zoroastrian priests to record sacred texts.123
• Perso-Arabic script: Modern Persian and other major languages like Pashto, Kurdish, and Balochi are written in this script, which is of Aramaic origin and adapted with diacritical marks.1
• Cyrillic and Latin: During and after the Soviet era, Tajik and Ossetic were written in modified Cyrillic. Scholars have also used modified Latin alphabets for minor languages lacking a literary tradition.1
• Other scripts: Old Persian used a cuneiform syllabary, while Bactrian utilized the Greek script. Additionally, Khotanese and Tumshuq were recorded using varieties of the Central Asian Brāhmī script. Ossetic has also been written in the Georgian script.1