George XII, sometimes known as George XIII, of the House of Bagrationi, was the second and last king (mepe) of the Kingdom of Kartl-Kakheti in eastern Georgia from 1798 until his death in 1800.

The Bagrationi dynasty is a royal dynasty which reigned in Georgia from the Middle Ages until the early 19th century, being among the oldest extant Christian ruling dynasties in the world. In modern usage, the name of the dynasty is sometimes Hellenized and referred to as the Georgian Bagratids, also known in English as the Bagrations.