The Afghan Air Force (Pashto: د افغانستان اسلامي امارت هوایي ځواک, Dari: قوای هوایی امارت اسلامی افغانستان) is the air force branch of the Afghan Armed Forces.

The Royal Afghan Air Force was established in 1921 under the reign of King Amanullah and significantly modernized by King Zahir Shah in the 1960s. During the 1980s, the Soviet Union built up the Afghan Air Force, first in an attempt to defeat the mujahideen and in hopes that strong Afghan airpower would preserve the pro-Soviet government of Mohammad Najibullah. When Najibullah eventually fell in 1992 the Afghan Air Force may have counted 350 aircraft. The collapse of Najibullah's government in 1992 and the continuation of a civil war throughout the 1990s reduced the number of Afghan aircraft to some 35–40. During Operation Enduring Freedom in late 2001, in which the Taliban government was ousted from power, all that remained of the AAF was a few helicopters.

In 2006, the Afghan National Army Air Corps was established, and was renamed the Afghan Air Force in 2010 while remaining part of the Afghan National Army. Since 2007, the U.S.-led Combined Air Power Transition Force, renamed the NATO Air Training Command-Afghanistan in 2010, aimed to rebuild and modernize the Afghan Air Force. It served as the air component of the NATO Combined Security Transition Command-Afghanistan which was responsible for organising the Afghan Armed Forces. The AAF possessed 161 aircraft in 2021 and had in 2020 over 7,500 personnel. The Resolute Support Mission intended to raise the ranks of the AAF to 8,000 airmen and increase the number of aircraft, which were progressively getting more advanced.

Following the withdrawal of NATO forces in the summer of 2021, in addition to a large-scale offensive by the Taliban, the mostly non-functional Air Force largely disintegrated. This culminated in the Fall of Kabul and President Ashraf Ghani fleeing to the United Arab Emirates. Large numbers of airmen either fled the country or stood down in the face of the Taliban, with many fixed and rotary-wing aircraft being destroyed or captured by the Taliban. Many other fixed and rotary-wing aircraft had flown to neighboring countries. It was reported that 46 aircraft (22 fixed-wing and 24 helicopters) have so far ended up at Termez Airport in Uzbekistan. After the takeover, the Taliban expressed their intention to rebuild the Afghan Air Force and had called on US-trained Afghan pilots to return to Afghanistan.

In July 1921, the RSFSR promised to deliver aircraft free of charge to the Afghan government. In 1924 and 1925 the new air force first saw action when it fought against the Khost rebellion. From 1921, the Soviet Union and the United Kingdom provided a small number of aircraft to King Amanullah Khan; who had been impressed with British India's use of aircraft against the Emirate of Afghanistan's forces in 1919, during the Third Anglo-Afghan War. However, the aircraft he was given were not made into a separate air arm until 1924. For the next decade, Soviet pilots performed the bulk of the flying and equipping for the AAF, probably about one-half of the aircraft were Polikarpov R-1s, a Soviet copy of the de Havilland DH.9A. Most AAF aircraft were destroyed in the civil war that began in December 1928, and it was not before 1937 that a serious rebuilding effort began. From the late 1930s until World War II, British Hawker Hind and Italian IMAM Ro.37 aircraft constituted the bulk of the Afghan Air Force, which by 1938 amounted to about 30 planes in service. The Hawker Hind remained in the Afghan inventory until 1957, and as of 2009 one former Afghan Air Force Hawker Hind still flew in the Shuttleworth Collection. In 1947, the Air Force was redesignated the Royal Afghan Air Force (RAAF), a title it retained until further political upheaval in 1973.

By 1960, the Royal Afghan Air Force consisted of approximately 100 combat aircraft including MiG-15 fighters, Il-28 light bombers, transports, and a few helicopters. Also by that time, a small number of Afghan pilots were undergoing undergraduate pilot training in the United States, while others attended training in the Soviet Union, India, and several European countries. In 1973 King Zahir Shah was deposed and Mohammed Daoud Khan became the country's president. During his five years in power, until the Saur Revolution of 1978, Daoud gained Soviet assistance to upgrade the capabilities and increase the size of the Afghan Air Force, introducing newer models of Soviet MiG-21 fighters and An-24 and An-26 transports. In 1979 the Air Force lost four Mi-8s. Improvements in the early-to-mid-1970s notwithstanding, the Air Force remained relatively small until after the 1979–80 Soviet intervention in Afghanistan. While the Afghan Air Force was equipped with a large inventory – probably some 400 aircraft in the mid-1980s – many of them were manned and maintained by advisors from Czechoslovakia and Cuba. In many cases, the Soviets were reluctant to entrust Afghan pilots with either the latest aircraft models or high priority missions and, indeed, a number of Afghan pilots were equally reluctant to conduct air strikes against their countrymen. The Afghan Air Force was at its strongest in the 1980s and early 1990s, producing some concern on the part of neighboring countries. The Air Force had at least 7,000 personnel plus 5,000 foreign advisors. At its peak, the Air Force had at least 240 fixed-wing fighters, fighter-bombers and light bombers. Midway through the Soviet–Afghan War, one estimate listed the following inventory:

Additionally, the Afghan Air Force probably operated some 40 or more transports, including the Antonov An-26, Antonov An-24, and Antonov An-2. Another estimate in 1988 painted a more detailed picture of the Afghan Air Force:

On February 1, 1986, the staffing of military equipment and personnel of the Air Force and Air Defence was: