General Sir Baldwin Leighton, 6th Baronet (15 January 1747 – 13 November 1828) was a senior English officer in the British Army. Leighton was the son of Baldwin Leighton, the 2nd son of Sir Edward Leighton, 2nd Baronet. He joined the army in 1760 by purchasing a lieutenancy (at the age of 13) in Captain Jenning's company, which in that same year became part of the 96th Regiment and was posted to India. There Leighton undertook garrison duties at Fort St George before taking to the field. After the Treaty of Paris (1763) the regiment returned to England and was disbanded.