| Honorific Prefix: | The Right Honourable |
| The Lord Fairfax of Cameron | |
| Birth Date: | 23 June 1870 |
| Birth Place: | Largo, Maryland |
| Death Place: | London, England |
| 12th Lord Fairfax of Cameron | |
| Years Active: | 1900–1939 |
| Nationality: | American |
| Parents: | John Fairfax, 11th Lord Fairfax of Cameron Mary Brown Kirby |
| Spouse: | Maude Wishart McKelvie |
Albert Kirby Fairfax, 12th Lord Fairfax of Cameron (23 June 1870 – 4 October 1939) was an American-born British peer and politician who sat in the House of Lords.
Born at Northampton,[1] in Largo, Prince George's County, Maryland, Fairfax was discovered to be the rightful holder of his title after it had been essentially forgotten by his family (which had resided in the United States for several generations). After researchers determined Albert Kirby Fairfax to be the 12th Lord Fairfax of Cameron, his title was allowed by the House of Lords in 1908. His father was John Fairfax, 11th Lord Fairfax of Cameron, and his mother was Mary Brown Kirby.
He was a member of Fairfax & Company, of George Street, London. He was a partner of Bonbright & Company, George Street, London.
He was naturalized as a UK citizen on 17 November 1908. He was elected a Scottish Representative Peer and served in that capacity from 19 October 1917 to his death on 4 October 1939.
Lord Fairfax of Cameron married Maude Wishart McKelvie, daughter of James McKelvie, in 1922.They had two sons:
The 12th Lord Fairfax died in October 1939, aged 69, and was succeeded in the lordship by the elder of his two sons, Thomas.