War in Afghanistan, or Afghan war, may refer to:
Conquest of Afghanistan by Alexander the Great (330 BC – 327 BC)
Islamic conquest of Afghanistan (637–709)
Conquest of Afghanistan by the Mongol Empire (13th century), see Mongol invasion of Central Asia
The Mughal Empire's various campaigns against the Persians for control of Afghanistan
The collapse of the Mughal Empire led the Durranis to counter Indian and Persian aggression
Anglo-Afghan Wars (First British involvement with Afghanistan):
First Anglo-Afghan War (1839–42)
Second Anglo-Afghan War (1878–81)
Third Anglo-Afghan War (1919)
Panjdeh incident (1885)
Reforms of Amānullāh Khān and civil war (1929), civil war occurred when Habibullāh Kalakāni briefly overthrew the government and became emir
War in Afghanistan (1978–present) (sometimes known as "Second Afghan Civil War"):
Saur Revolution (1978), Communist insurrection
Soviet–Afghan War (1979–1989), Soviet involvement
Afghan Civil War (1989–92), collapse of the communist Najibullah government
Afghan Civil War (1992–96), leads to the Taliban controlling most of Afghanistan, with the Northern Alliance controlling northern Afghanistan
Afghan Civil War (1996–2001), Taliban period
War in Afghanistan (2001–2014), the American-led invasion
War in Afghanistan (2015–present), Resolute Support (NATO-led) involvement
