Abstract: For a long time now, the phenomenon of corruption remains one of the greatest obstacles to development in many nations, particularly the developing ones. With particular reference to Nigeria, the phenomenon has indeed been recognized as a major single cause of crime, poverty and some other social vices. The world over, attempts are made to combat or fight this social problem through the establishment of anti-corruption agencies or commissions. This study examines the phenomenon of corruption in Nigeria and it assesses the successes and failures of one of the anti-corruption agencies namely, the Independent Corrupt Practice and other Related Offences Commission (ICPC) set up by the Nigerian Government to fight corruption.