The 1973 Afghan coup d'état, also called by Afghans as the Coup of 26 Saratan (Dari: کودتای ۲۶ سرطان) and self-proclaimed as the Revolution of 26 Saratan 1352, was led by Army General and prince Mohammad Daoud Khan against his cousin, King Mohammad Zahir Shah, on 17 July 1973, which resulted in the establishment of the Republic of Afghanistan under a one-party system led by Daoud Khan.
For the coup, Daoud Khan led forces in Kabul along with then-chief of staff General Abdul Karim Mustaghni, to overthrow the monarchy while the King was convalescing abroad in Ischia, Italy. Daoud Khan was assisted by army officers and civil servants from the Parcham faction of the PDPA, including Air Force colonel Abdul Qadir. Daoud also had the support of air force personnel stationed in Kabul International Airport and Bagram Air Base, led by Lieutenant Abdul Hamed Muhtaat and Lieutenant Pachagul Wadafar, although the flying of military aircraft over the city was not called upon. Seven loyalist police officers and one tank commander, as well as three members of his tank crew, were killed in what was described at the time by staff from the United States National Security Council as a "well planned and swiftly executed coup".