The secretary of state for environment, food and rural affairs, also referred to as the environment secretary, is a secretary of state in the Government of the United Kingdom, with overall responsibility for the Department for Environment, Food and Rural Affairs (Defra). The incumbent is a member of the Cabinet of the United Kingdom.

The Department for Environment, Food and Rural Affairs (Defra) is a ministerial department of the Government of the United Kingdom. It is responsible for environmental protection, food production and standards, agriculture, fisheries and rural communities in the entire United Kingdom. Concordats set out agreed frameworks for co operation, between it and the Scottish Government, Welsh Government and Northern Ireland Executive, which have devolved responsibilities for these matters in their respective nations.