The paper examines the proposed Economic and Monetary Union for ECOWAS sub-region and provide a comprehensive evidence based on European Union experience of what ECOWAS common currency stand to gain in terms of both Intra and Inter flow of FDI. Evidence from the reviewed literature revealed that; single currency, research and development, trades and consequent exchange rate stability are the main factors that have been aiding FDI flows within the euro-zone. | Foreign direct investment and monetary union in Ecowas sub-region: Lessons from abroad