Vachnadze (Georgian: ვაჩნაძე) was a Georgian noble family, a principal line descending from the early medieval Donauri dynasty of Kakheti. Their offshoots were the Beburishvili (probably also Babadishvili). The family has produced several notable religious, military and cultural figures.
The Vachnadze fief was centered at the village Kardenakhi. Their princely rank was recognized by the Russian Empire in 1826 and 1850. An unrelated family, originally known as Onanashvili, was enfeoffed with the estate of one of the extinct lines of Vachnadze and allowed to adopt their title and surame in the 18th century.[1][2]