The March of Merseburg (German: Mark Merseburg) was a short-lived march of the Holy Roman Empire. It comprised the lands of the Polabian Slavs beyond the margravial residence at Merseburg on the Saale river. Upon Gunther's death, Merseburg was reunited with the marches of Meissen and Zeitz under the rule of Margrave Rikdag of Meissen, who thus temporarily reunited all of the southern Marca Geronis save the Saxon Eastern March. The March of Merseburg may refer to the earlier Marca Geronis, which also had its capital at Merseburg.