The Armenian diaspora refers to the communities of Armenians outside Armenia and other locations where Armenians are considered to be indigenous. Since antiquity, Armenians have established communities in many regions throughout the world. The Armenian diaspora is one of the oldest and largest diasporas in the world, with the oldest community being the Armenian Quarter of Jerusalem.
The modern Armenian diaspora was largely formed as a result of World War I, when the genocide committed by the Ottoman Empire forced Armenians in Western Armenia to flee. Another wave of emigration from Eastern Armenia occurred in the 1990s amid the dissolution of the Soviet Union, the Turkish-Azeri blockade of Armenia, and an energy crisis. The High Commissioner for Diaspora Affairs established in 2019 is in charge of coordinating and developing Armenia's relations with the diaspora. The vast majority of ethnic Armenians worldwide do not live in the Republic of Armenia, and has led to repatriation campaigns.