County Hall, formerly the Old Sessions House, is a municipal building in Sandling Road in Maidstone, Kent, England. The county hall, which is the headquarters of Kent County Council, is a Grade II listed building.

Kent County Council is a county council that governs the non-metropolitan county of Kent in England. The non-metropolitan county is smaller than the ceremonial county, which additionally includes the unitary authority of Medway. Kent County Council is the upper tier of elected local government, below which are 12 district councils, and around 300 town and parish councils. The county council has 81 elected councillors. It is one of the largest local authorities in England in terms of population served and the largest local authority of its type. The council is based at County Hall in Maidstone. It has been under Conservative majority control since 1997.