The secretary of state for transport, also referred to as the transport secretary, is a secretary of state in the Government of the United Kingdom, with overall responsibility for the policies of the Department for Transport. The incumbent is a member of the Cabinet of the United Kingdom.

His Majesty's principal secretaries of state, or secretaries of state, are senior ministers of the Crown in the Government of the United Kingdom. Secretaries of state head most major government departments and make up the majority of the Cabinet of the United Kingdom.