David William Donald Cameron, Baron Cameron of Chipping Norton, is a British politician who has served as Foreign Secretary since 2023. He previously served as Prime Minister of the United Kingdom from 2010 to 2016, as Leader of the Conservative Party from 2005 to 2016, and as Leader of the Opposition from 2005 to 2010, while serving as Member of Parliament (MP) for Witney from 2001 to 2016. He identifies as a one-nation conservative and has been associated with both economically liberal and socially liberal policies.

The secretary of state for foreign, commonwealth and development affairs, also known as the foreign secretary, is a secretary of state in the Government of the United Kingdom, with responsibility for the Foreign, Commonwealth and Development Office. The role is seen as one of the most senior ministers in the UK Government and is a Great Office of State. The incumbent is a member of the Cabinet of the United Kingdom and National Security Council, and reports directly to the prime minister.