Maharana Sardar Singh[1] (29 August 1798 – 14 July 1842) was the Sisodia Rajput ruler of Mewar(r. 1838–1842).He was the great grandson of Sangram Singh II,[2] grandson of Maharaj Nath Singh of Bagore, son of Maharaj Shivdan Singh of Bagore who were the "Thikanedars" i.e a hereditary fief under their parent state of Mewar. He was adopted by his childless predecessor Maharana Jawan Singh to succeed him.Having died heirless was in turn succeeded by his brother Swarup Singh.[2]