Tamar (Georgian: თამარი; 1696 – 12 April 1746) was a Georgian royal princess of the Bagrationi dynasty, a daughter of King Vakhtang VI of Kartli, of the Mukhranian branch, and the second wife of King Teimuraz II, of the Kakhetian branch. The union with Teimuraz made her queen consort of Kakheti (1729–1736, 1738–1744). She was queen regnant of Kartli (1744–1746) in her own right under the name Tamar II.
Tamar was born to then-Prince Royal Vakhtang of Kartli and his Circassian wife Rusudan in 1696. Vakhtang ruled Kartli intermittently from 1703 until being forced by the Ottoman invasion into exile to the Russian Empire in 1724. At the age of 16, on 2 February 1712, Tamar married, as his second wife, Prince Royal Teimuraz of Kakheti, a younger brother of King David II of Kakheti (Imam Quli Khan). The wedding was lavishly celebrated in Vakhtang's capital city of Tbilisi and then in Manavi, Kakheti. The couple's subsequent life was marred by a civil strife, attacks by the Lezgians, and invasions from the Ottoman Empire and Persia. Teimuraz twice acceded to the throne of Kakheti, from 1729 to 1736 and again, from 1738 to 1744, when he resigned Kakheti to his son, Heraclius II, and established himself on the vacated throne of his in-laws in Kartli.