Alan Duncan, English businessman and politician, former Shadow Leader of the House of Commons
Sir Alan James Carter Duncan (born 31 March 1957) is a British former Conservative Party politician who served as Minister of State for International Development from 2010 to 2014 and as Minister of State for Europe and the Americas from 2016 to 2019. He was the Member of Parliament (MP) for Rutland and Melton from 1992 to 2019.

He began his career in the oil industry with Royal Dutch Shell, and was first elected to the House of Commons in the 1992 general election. After gaining several minor positions in the government of John Major, he played a key role in William Hague's successful bid for the Conservative leadership in 1997. Duncan received several promotions to the Conservative front bench, and eventually joined the Shadow Cabinet after the 2005 general election. He stood for the Conservative leadership in 2005, but withdrew early on because of a lack of support. Eventual winner David Cameron appointed him Shadow Secretary of State for Trade and Industry in December 2005; the name of the department he shadowed was changed to Department for Business, Enterprise and Regulatory Reform in July 2007.

Following the 2010 general election, the new Conservative Prime Minister Cameron appointed Duncan as Minister of State for International Development. He left this post following the government reshuffle in July 2014, and was subsequently appointed a Knight Commander of the Order of St Michael and St George in September 2014, for services to international development and to UK–Middle East relations. While on the backbenches, Duncan served on the Intelligence and Security Committee between 2015 and 2016.After two years out of government, he returned to frontline politics when new Prime Minister Theresa May appointed him as Minister for Europe and the Americas, and effective deputy to then-Foreign Secretary Boris Johnson, in July 2016. Duncan resigned as Minister of State on 22 July 2019 citing Johnson's election to the Tory leadership and, hence, the UK's premiership.He became the first openly gay Conservative Member of Parliament, publicly coming out in 2002.