Common law, a development of its post colonial independence;
Customary law which is derived from indigenous traditional norms and practice, including the dispute resolution meetings of pre-colonial Yorubaland secret societies and the Èkpè and Okónkò of Igboland and Ibibioland;
Sharia law, used only in the predominantly Muslim north of the country. It is an Islamic legal system which had been used long before the colonial administration in Nigeria but recently politicised and spearheaded in Zamfara in late 1999 and eleven other states followed suit. These states are Kano, Katsina, Niger, Bauchi, Borno, Kaduna, Gombe, Sokoto, Jigawa, Yobe, and Kebbi.