Ali Bahadur (1758–1802), also known as Krishna Sinha, was a Nawab of the dominion of Banda (present day Uttar Pradesh) in northern India, a vassal of the Maratha Empire. He was the son of Shamsher Bahadur I and the grandson of Peshwa Bajirao I.
Under the auspices of the powerful Maratha nobles, Ali Bahadur established his authority over large parts of Bundelkhand and became the Peshwa's Subedar of Banda. His son and successor Shamsher Bahadur II held allegiance towards the Maratha polity and fought the English in the Anglo-Maratha War of 1803.