Maj. James St Clair, 14th Lord Sinclair (3 July 1803 – 24 October 1880) was a Scottish noble and representative peer.
His paternal grandparents were Elizabeth (née Rutherfurd) St Clair (a daughter of John Rutherfurd, MP for Roxburghshire) and Andrew St Clair of Herdmanston, de jure 12th Lord Sinclair.
[2] Charles St Clair, de jure 11th Lord Sinclair (a son of Dr. Matthew St Clair, who was a younger brother of John Sinclair, 23rd Lord Herdmanston).
[7] On 14 September 1830, St Clair was married to Jane Little, eldest daughter of Archibald Little, of Shabden Park.
Together, they were the parents of:[8] Lord Sinclair died on 24 October 1880 and was succeeded in the lordship by his eldest son Charles.