Armenians in Turkey (Turkish: Türkiye Ermenileri; Armenian: Թուրքահայեր or Թրքահայեր, T’urk’ahayer, 'Turkish Armenians'), one of the indigenous peoples of Turkey, have an estimated population of 40,000 to 50,000 today, down from a population of almost 2 million Armenians between the years 1914 and 1921. Today, the overwhelming majority of Turkish Armenians are concentrated in Istanbul. They support their own newspapers, churches and schools, and the majority belong to the Armenian Apostolic faith and a minority of Armenians in Turkey belong to the Armenian Catholic Church or to the Armenian Evangelical Church. They are not considered part of the Armenian diaspora, since they have been living in their historical homeland for more than four thousand years.
Until the Armenian genocide of 1915, most of the Armenian population of Turkey (then the Ottoman Empire) lived in the eastern parts of the country that Armenians call Western Armenia (roughly corresponding to the modern Eastern Anatolia region).
