Deregulation is one essential aspect of price market reforms which entail both unshackling private sector development through removal of government restrictions on private economic activity and divestiture of the state assets particularly Public Enterprises (PEs) into private hands. Deregulation has been globally embraced by many countries of the world like Peru, Brazil, Argentina, Mexico and Japan. This has made a significant turning point in the success story of these countries. This book assess the implementation of the deregulation policy of the Nigerian National Petroleum Corporation (NNPC) in the downstream of the Nigeria Petroleum Industry.