Garret Wesley (circa 1665 – 28 September 1728) was an Irish Member of Parliament.
He was the son of Garret Wesley I and Elizabeth Colley. He married Katherine Keating but had no issue. His maternal grandfather was Dudley Colley: on his death he left his property to his cousin Richard Wesley, 1st Baron Mornington, on condition he take the surname Wesley. Richard was the grandfather of Arthur Wellesley, 1st Duke of Wellington