With increased cross-border transactions and investments, the significance of private international law (or conflict of laws) – the body of law that aims to resolve claims involving foreign elements – has become more accentuated than ever. Indeed, private international law rules have sometimes been invoked in resolving disputes with inter-state dimensions within the federation, especially on jurisdiction and choice of law matters. Conflict of laws has also been used to resolve disputes involving internal conflicts between various customary laws and between customary laws and the Nigerian Constitution or enabling statues, especially in the area of family law. In essence, because of its federal structure, private international law is relevant in both the inter-state and international litigation in Nigeria.