Armenia–Turkey border

The Armenia–Turkey border (Armenian: Հայաստան–Թուրքիա սահման, romanized: Hayastan–T’urk’ia sahman; Turkish: Ermenistan–Türkiye sınırı) is 311 km (193 mi) in length and runs from the tripoint with Georgia in the north to the tripoint with Azerbaijan in the south. The land border has officially been closed since 3 April 1993 when Turkey joined Azerbaijan in imposing a transportation and economic blockade against Armenia and Nagorno-Karabakh, in response to the Karabakh movement which called for independence from Azerbaijan and reunification with Armenia. Should Turkey, which is a candidate for EU membership, accede to the EU, Armenia will be a border neighbor with the European Union.

The blockade remains in force today and aims at pressuring the Armenian side to make concessions: including the cessation of Armenia's pursuit of international recognition of Turkey's genocide in Western Armenia, the ratification by Armenia of the 1921 borders inherited from the Kemalist-Soviet Treaty of Kars, and the establishment of an extraterritorial corridor through Armenian territory.

Despite the official closure of land borders in 1993, the Turkish–Armenian border had already de facto been closed since the 1920s (with the exception of the Kars-Gyumri railway crossing) and is sometimes described as the last vestige of the Iron Curtain.

Between 1992 and 2025, the border was protected by guards of the Russian Federal Security Service after which protection was transferred to the Armenian Border Guard Service.