The UDA South Belfast Brigade is the section of the Ulster loyalist paramilitary group, the Ulster Defence Association (UDA), based in the southern quarter of Belfast, as well as in surrounding areas. Initially a battalion, the South Belfast Brigade emerged from the local "defence associations" active in the city at the beginning of the Troubles. It subsequently emerged as the largest of the UDA's six brigades and expanded to cover an area much wider than its initial South Belfast borders.