Windham Henry Quin, 2nd Earl of Dunraven and Mount-Earl
(29 September 1782
– 6 August 1850
) was an Irish Peer.
The eldest son of Valentine Richard Quin, 1st Earl of Dunraven and Mount-Earl, he was styled Lord Adare from 1816 to 1822 and Viscount Adare thereafter until he succeeded to the Earldom on the death of his father in 1824.
He married, on December 27, 1810, Caroline, daughter and heiress of Thomas Wyndham of Dunraven Castle, Glamorgan. They had the following children:
- Edwin Wyndham-Quin, 3rd Earl of Dunraven and Mount-Earl (1812–1871)
- Captain the Hon. Windham Henry Wyndham Quin (November 2, 1829 – 1865), who married, on January 24, 1856, Caroline, third daughter of Rear Admiral Sir George Tyler, K.H., of Cottrell, Glamorgan, M.P., and had issue.
- Lady Anna Maria Charlotte Wyndham Quinn (November 1814 – January 7, 1855), who married William Monsell on August 11, 1836
- Lodge, Edmund, Norroy King of Arms, &c., The Peerage of the British Empire & Baronetage, 27th edition, London, 1858, p.203–4.