Group Captain George Nigel "Geordie" Douglas-Hamilton, 10th Earl of Selkirk, KT, GCMG, GBE, AFC, AE, PC, QC (4 January 1906 – 24 November 1994) was a British nobleman and Conservative politician.

Born at Merly, Wimborne, Dorset, he was the second son of Nina Mary Benita, youngest daughter of Major R. Poore, Salisbury, and the 13th Duke of Hamilton and Brandon.

[5] He succeeded as the 12th Earl of Selkirk on the death of his father in 1940, under the terms of a special remainder, his elder brother becoming the 14th Duke of Hamilton.

From 1946 to 1950, Selkirk served as the president of the Cockburn Association, an influential conservationist and civic amenity body.

He served as a lord in waiting to King George VI (1951–1952) and to Queen Elizabeth II (1952–1953).