John Hamilton Dalrymple, 10th Earl of Stair, KT JP DL (1 April 1819 – 3 December 1903), styled Viscount Dalrymple from 1853 until 1864, was a Scottish peer and politician, who served as Governor of the Bank of Scotland for thirty-three years.

[1] He was the eldest son of North Dalrymple, 9th Earl of Stair, and his first wife, Margaret Penny (d. 1828).

His sister, Lady Margaret Dalrymple, married advocate and amateur botanist Allan Alexander Maconochie.

After it was proposed in 1877, he successfully opposed the southward extension to Drummore of the Portpatrick and Wigtownshire Joint Railway.

[5] In 1846, he married his cousin, Louisa Jane Henrietta Emily de Franquetot, the Edinburgh-born eldest daughter of Augustin-Gustave de Franquetot, 3rd Duke of Coigny and Henrietta Dundas Dalrymple-Hamilton (a daughter of Sir Hew Dalrymple-Hamilton, 4th Baronet).