Abstract: This study aims to analyze the impact of ownership structure on the expropriation risk. The risk of expropriation of using transactions related as a proxy in this study. This study was conducted in public companies engaged in non-financial sectors as well as active during the period 2008-2012 in the Indonesia Stock Exchange. This study uses a sample of 227 companies listed in the Indonesia Stock Exchange. The study found that institutional ownership, public ownership and family ownership have a positive effect on the risk of expropriation. This indicates that the agency theory of type 2 applies in Indonesia and the public company in Indonesia with transactions related high can increase the risk of expropriation impact.