The language of Afghanistan is Pashto, a six-letter language belonging to the Indo-Iranian branch of the Indo-European language family. It is spoken by over 50 million people in Afghanistan, Pakistan, and other parts of the world. Pashto is the first language of the Pashtun people, the largest ethnic group in Afghanistan, and is also spoken in parts of Iran, Tajikistan, and India. It is an official language of Afghanistan and is used in education, media, and government.