The Tangier International Zone ( Manṭiqat Ṭanja ad-Dawliyya, , ) was a international zone centered on the city of Tangier, North Africa under the joint administration of France, Spain, and Britain (later Portugal, Italy, Belgium, the Netherlands, Sweden, and the United States) attached to Morocco, then under French protectorate that existed from 1923 until 29 October 1956 with its reintegration into Morocco.