Colonel Sir John Edward Gilmour, 3rd Baronet, DSO, TD, DL (24 October 1912 – 1 June 2007) was a British Conservative Party politician.
As a major, he led a squadron of tanks that was in the thick of the fighting in Operation Goodwood, as one of the leading units of the 11th Armoured Division in its attack on Bourguebus Ridge.
He was returned home after being wounded near Belsen, and went on to command the regiment when it was reconstituted as a Territorial Army unit in 1947.
Gilmour contested Clackmannan and Eastern Stirlingshire in the 1945 general election, losing to the incumbent MP, Arthur Woodburn.
He won the by-election in 1961 for East Fife following the death of Sir James Henderson-Stewart, defeating John Smith while the future leader of the Labour Party was a law student at Glasgow University.
He was dubbed "Sir John Sugar-Beet" during the campaign; he took the intended insult as a compliment, noting that the sugar beet grown on his estate and processed at a local mill supported many jobs in the constituency.
He was also Lord High Commissioner to the General Assembly of the Church of Scotland in 1982 and 1983 (a post that his father had held in 1938 and 1939).