Ian Gilmour Baron Gilmour of Craigmillar
 Ian Hedworth John Little Gilmour Baron Gilmour of Craigmillar PC (8 July 1926 – 21 September 2007) was a Conservative politician in the United Kingdom. He was styled Sir Ian Gilmour 3rd Baronet from 1977 having succeeded to his father's baronetcy until he became a life peer in 1992. He served as Secretary of State for Defence in 1974 in the government of Edward Heath. He also served in the government of Margaret Thatcher as Lord Privy Seal from 1979 to 1981.