To realize a cooperative that has good business performance, one important instrument is "supervision". Supervision referred to here includes a good supervision system, which relies on internal supervision by "supervisors" in every cooperative and external supervision carried out by the government. The purpose of this research is to see the implementation of Good Corporate Governance (GCG) and the application of cooperative supervision. A good GCG system can affect the profitability of cooperatives. With the implementation of GCG, the performance of cooperatives can increase. The methods used in this research is case study and descriptive analysis by observing directly the object.