Towards a Theory of Indigenous Contract Law in the Igbo Commercial Tradition: Implications for Nigerian Private Law

Igbo commercial culture in South East Nigeria has historically operated through sophisticated indigenous contractual norms including ofo na ogu (oath and justice) obligations, osu exclusion principles, oji (kola nut) ceremonies as binding commitments, and community-enforced market agreements, yet these indigenous contractual forms have been systematically marginalised by the received English common law framework. This study advances an original theory of Indigenous Contract Law (ICL) grounded in the Igbo commercial tradition, constructing a framework that maps indigenous contractual norms, identifies their jurisprudential foundations, and explores their implications for the development of a more pluralist and contextually authentic Nigerian private law of obligations. Using a grounded theory methodology that integrates 120 in-depth interviews with Igbo elders, market leaders, customary court judges, and private law scholars in Anambra, Imo, Ebonyi, Enugu, and Abia States with doctrinal analysis and comparative indigenous law scholarship from New Zealand, Australia, and West Africa, the research recovers and systematises the theoretical architecture of Igbo indigenous contract law. The ICL theory represents a genuine original contribution to knowledge, providing the first systematic theoretical treatment of Igbo contractual norms as a source of private law. Findings reveal a rich, functional system of indigenous contracting that can enrich Nigerian private law theory and practice. Recommendations include incorporation of ICL principles into Nigerian customary law jurisprudence, academic curriculum integration, and legislative recognition of indigenous commercial norms. Keywords: indigenous contract law, Igbo commercial tradition, legal pluralism, customary law, South East Nigeria