John Hew North Gustav Henry Hamilton-Dalrymple, 11th Earl of Stair (12 June 1848 – 2 December 1914), known as Viscount Dalrymple from 1864–1903, was a Scottish army officer and nobleman.

Hamilton-Dalrymple was the son of John Hamilton Dalrymple, 10th Earl of Stair and his wife, Louisa Jane Henrietta Emily de Franquetot. He married Susan Harriet Grant-Suttie, daughter of Sir James Grant-Suttie, 6th Bt. and Lady Susan Harriet Innes-Ker, on 10 April 1878; they were divorced in 1905.

There were three children of the marriage:

• Lady Beatrice Susan Dalrymple (died 10 May 1962) married 1905 (divorced 1922) Archibald Montgomerie, 16th Earl of Eglinton, and had issue
• John James Dalrymple, 12th Earl of Stair (1 February 1879 – 4 November 1961)
• Lady Marjorie Louise Dalrymple (23 February 1888 – 10 June 1971)

Lord Stair was a captain of the Ayrshire (Earl of Carrick's Own) Yeomanry,^[1] and was promoted to major on 4 March 1902.^[2] He was granted the honorary rank of lieutenant-colonel on 2 August 1902.^[3]

In 1912 he became President of the influential Scottish conservationist group the Cockburn Association, relinquishing the position the following year.^[4] His son John would go on to become President of the group in 1932.

Lord Stair died on 2 December 1914, aged 66.

• Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes (Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003), volume 1, page 1284.