The House of Henneberg was a medieval German comital family (Grafen) which from the 11th century onwards held large territories in the Duchy of Franconia. Their county was raised to a princely county (Gefürstete Grafschaft) in 1310. Upon the extinction of the line in the late 16th century, most of the territory was inherited by the Saxon House of Wettin and subsequently incorporated into the Thuringian estates of its Ernestine branch.