Robert Watkin Wynne (c. 1754 – 2 March 1806), of Garthmeilo, Merionethshire and Plas Newydd, Denbighshire, was a Welsh politician.
He was the only surviving son of Robert Wynne of Garthmeilio and Plas Newydd and educated at Westminster School (1767–71) and Jesus College, Oxford (1773).
He was a Member (MP) of the Parliament of Great Britain for Denbighshire from 28 August 1789 to 1796.
He married Anne Sobieski, the daughter of Thomas Dod of Edge, Cheshire; they had one son.
This article about a Member of the Parliament of Great Britain (1707–1800) representing a Welsh constituency is a stub.