General Sir Alexander Leith KCB (1 December 1774 – 19 February 1859) was a Scottish officer in the British Army.
[2] He was born in Cobardie, Forgue, Aberdeenshire, Scotland, the son of Alexander Leith of Freefield & Glenkindie and Mary Elizabeth Gordon.
He joined the British Army as an ensign in August 1792 and was made first a lieutenant and then captain in 1794.
He was promoted to Major in 1804 and served in Egypt in 1807, including at the attack on Rosetta.
He had married twice; firstly Maria Thorp, with whom he had a large family, and secondly Mary Mackenzie.