The Turkish diaspora refers to ethnic Turkish people who have migrated from, or are the descendants of migrants from, the Republic of Turkey, Northern Cyprus or other modern nation-states that were once part of the former Ottoman Empire. Therefore, the Turkish diaspora is not only formed by people with roots from mainland Anatolia and Eastern Thrace ; rather, it is also formed of Turkish communities which have also left traditional areas of Turkish settlements in the Balkans, the island of Cyprus, the region of Meskhetia in Georgia, and the Arab world.

Turkish is the most widely spoken of the Turkic languages, with around 90 to 100 million speakers. It is the national language of Turkey and Northern Cyprus. Significant smaller groups of Turkish speakers also exist in Germany, Austria, Bulgaria, North Macedonia, Greece, Cyprus, other parts of Europe, the South Caucasus, and some parts of Central Asia, Iraq, and Syria. Turkish is the 18th most spoken language in the world.