George John Spencer, 2nd Earl Spencer,, styled Viscount Althorp from 1765 to 1783, was a British Whig politician. He served as Home Secretary from 1806 to 1807 in the Ministry of All the Talents. He was also the father of the Venerable Father Ignatius of St Paul, a Roman Catholic convert to the priesthood.

The Secretary of State for the Home Department, more commonly known as the Home Secretary, is a senior minister of the Crown in the Government of the United Kingdom and the head of the Home Office. The position is a Great Office of State, making the home secretary one of the most senior and influential ministers in the government. The incumbent is a statutory member of the British Cabinet and National Security Council.