North Hamilton Dalrymple, 9th Earl of Stair (1776 – 9 November 1864) was the son of Sir John Hamilton-Dalrymple-Macgill, 4th Bt. (died 26 February 1810) and Elizabeth Hamilton.
He married, firstly, Margaret Penny on 27 May 1817. He married, secondly, Martha Willett Dalrymple, daughter of Colonel George Dalrymple and Martha Willett Miller, on 23 March 1831. He died on 9 November 1864.