The Barakzai dynasty also known as the Muhammadzai dynasty ruled modern day Afghanistan from 1823 to 1978 when the monarchy ended de jure under Musahiban Mohammad Zahir Shah and de facto under his cousin Sardar Mohammad Daoud Khan. The Barakzai dynasty was established by Dost Mohammad Khan after the Durrani dynasty of Ahmad Shah Durrani was removed from power. As the Pahlavi era in Iran, the Muhammadzai era was known for its progressivist modernity in which Afghanistan was referred to as the "Switzerland of Asia".

Mohammad Zahir Shah was the last King of Afghanistan, reigning from 8 November 1933 until he was deposed on 17 July 1973. Ruling for 40 years, Zahir Shah was the longest-serving ruler of Afghanistan since the foundation of the Durrani Empire in the 18th century.