General Sir Robert Johnstone Barton, KCH (31 July 1768 – 17 March 1853) was an Anglo-Irish officer of the British Army.
Barton was the fifth son of William Barton of the Grove, County Tipperary, Ireland, and Grace Massy, daughter of Charles Massy, Dean of Limerick.
Having returned to England he obtained a commission in the 11th Light Dragoons, with which he served under the Duke of York in 1795, and again during the Anglo-Russian invasion of Holland in 1799, where he received the thanks of Sir Ralph Abercromby for his services on 8 September at Oude Carspel.
[3] He also commanded the two squadrons of the regiment subsequently sent to the Iberian peninsula during the Peninsular War, where he served for a time.
He married secondly to Marianne Colette Addison, widow of Colonel John MacPherson of Pitmain, great-granddaughter of Archbishop Smith, and had a third daughter, Alexandrina Charlotte, who married Sir Henry Josias Durrant, 4th Baronet.