Charles Erskine, Earl of Mar (19 October 1650 – 23 May 1689) was a Scottish nobleman. He is regarded as both the 22nd earl (in the 1st creation) and the 5th earl (in the 7th).
On 2 April 1674 he married Mary Maule, daughter of George Maule, 2nd Earl of Panmure. Their son John Erskine succeeded to the title.