The Somaliland War of Independence was a rebellion waged by the Somali National Movement (SNM) against the ruling military junta in Somalia led by General Siad Barre lasting from its founding on 6 April 1981 and ended on 18 May 1991 when the SNM declared what was then northern Somalia independent as the Republic of Somaliland. The conflict served as the main theater of the larger Somali Rebellion that started in 1978. The conflict was in response to the harsh policies enacted by the Barre regime against the main clan family in Somaliland, the Isaaq, including a declaration of economic warfare on the clan-family. These harsh policies were put into effect shortly after the conclusion of the disastrous Ogaden War in 1978.

The Somali National Movement was one of the first and most important organized guerilla groups and Mujahideen groups that opposed the Siad Barre regime in the 1980s to the 1990s, as well as being the main anti-government faction during the Somaliland War of Independence. The organisation was founded in London, England, on April 6, 1981 by Hassan Isse Jama, Hassan Adan Wadadid, and Ahmed Mohamed Gulaid and other former Somali diplomats, who stated that initially the group's purpose was to overthrow the Siad Barre regime.