| Surname: | Dadiani |
| Native Name: | დადიანი |
| Type: | Nobility |
| Country: | Georgia |
| Estates: | |
| Parent House: | House of Vardanisdze |
| Titles: |
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The House of Dadiani (Georgian: დადიანი in Georgian pronounced as /dadiani/), later known as the House of Dadiani-Chikovani, was a Georgian family of nobles, dukes and princes, and a ruling dynasty of the western Georgian province of Mingrelia.
The first data about the family dates back to 1046 AD. Presumably, the Dadiani descended from a certain Dadi, of the House of Vardanisdze. Appointed as hereditary eristavi (dukes) of Odishi (Samegrelo) in reward for their military services, the family had become the most powerful feudal house in western Georgia by the 1280's. At that time, the branches of the family governed also Svaneti, Guria, and Bedia.
In 1542 AD, Duke Levan I Dadiani became hereditary Prince (mtavari) of Mingrelia and established himself as an independent ruler. His descendant Prince Levan III Dadiani was forced to abdicate in 1691 AD and Dadiani’s relatives from the House of Chikovani, hitherto Princes of Salipartiano, inherited the title of Princes of Mingrelia and the surname of Dadiani. The original dynasty of Dadiani thus went extinct into what genealogists have termed the House of Dadiani-Chikovani. Accepting Russian sovereignty in 1802, the Dadiani were elevated to the dignity of Prince of the Russian Empire (Russian: Дадиани) and enjoyed significant independence in their home affairs. Russia made a de facto annexation of Samegrelo in 1857, but Samegrelo remained nominally in existence until January 4, 1867, when Niko Dadiani, the last Prince of Samegrelo, was deposed and the principality was abolished.[1] Prince Niko Dadiani officially renounced his rights to the throne in 1868.
See also: List of monarchs of Mingrelia.