| Tamar | |
| Birth Date: | 1380s |
| Death Date: | 1455 |
| Spouse: | Alexander I of Georgia |
| Issue: | George VIII of Georgia David Zaal |
| House: | Bagrationi |
| House-Type: | Dynasty |
| Father: | Alexander I of Imereti |
| Mother: | Anna Orbeliani |
Tamar (Georgian: თამარი) was a daughter of the Western Georgian King Alexander I of Imereti, and the Queen consort of Georgia, as the second wife of Alexander I of Georgia.
Tamar was born at the end of the 14th century. Her father was Alexander I of Imereti, King of Western Georgia who reigned de facto from 1387 until his death in 1389. Little is known about her mother, Anna, the daughter of an Orbeliani prince. Around 1414/1415, Tamar was married to King Alexander I of Georgia, who had reigned since 1412. She bore the king four children. In 1442, Alexander abdicated his kingdom which he left to the eldest son he had from his first wife, Dulandoukht, daughter of Beshken Orbelian, Vakhtang IV. Alexander therefore retired to a monastery under the name of Athanasius and died in 1446, thus leaving Tamar at the mercy of his stepson. However, she survived her two stepsons Vakhtang and Demetrius, and it was during the reign of her own son, George VIII, in 1455, that she died.
Tamar had three sons from her marriage with King Alexander I of Georgia: