The Kajars (also spelled Qajars, Kadzhars, Cadzhars, Cadjars and so on) are a Turkic people of the Oghuz Turks who lived variously, with other tribes, in the area that is now northeastern Turkey, Armenia, Azerbaijan and northwestern Iran. They are considered as a branch of the Azeri. In the 17th and 18th centuries the Kajars resisted the Safavids and settled the Karabakh Khanate. In 1794, a Kajar chieftain, Agha Mohammed, founded the Qajar dynasty which replaced the Zand dynasty in Iran. In the 1980s the Kajar population exceeded 15,000 people, most of whom lived in Iran.
The Kadzhar were a tribe that lived in Russian Armenia in the 19th century and possibly before. In 1873 they numbered 5,000.