The existence of Sharia Supervisory Board in Sharia Financial Institution which has a legal entity as a company is a mandate of legislation and to keep the trust of sharia financial consumers. In fact, Sharia Supervisory Board who works in Sharia Financial Institution does not have any clear post and responsibility based on Act Number 40 Year 2007 in Limited Company, Act Number 21 Year 2008 in Sharia Banking and others related legislations. In addition, they were assumed as a financial burden because every company based on Sharia Principles must own Sharia Supervisory Board. This paper will analyze these problems using normative legal method with legal approach. The result of this paper will offer idea and legal thoughts in order to place Sharia Supervisory Board into company organs. Furthermore, Sharia Financial Institution as a company should work effectively and efficiently to get the best profit based on Sharia Principles.