In line with the rapid development and technology, several years, so much company increasing business capital through the Capital Market sector. Activities commonly carried out by offering shares to the public through the Initial Public Offering, which is also known as IPO. Initial Public Offering is one form of public offering that will be used by companies that are currently called IPOs, so the company will become a public company. The Indonesia Stock Exchange (IDX) listed 568 registered companies (registered companies) at this time, able to access more than 500 Limited Companies in Indonesia that have conducted Initial Public Offering. Controlling Shareholders refers to US Legal Definiton means a shareholder who owns more than half of the shares or majority of the outstanding shares in a company. A controlling shareholder generally controls the composition of the board of directors and influences the corporation’s activities. Sometimes, a shareholder who owns a smaller percentage but a significant number of remaining shares in the company can also be a controlling shareholder. Also, Data collection is done by library techniques, namely by reading books or other reading material related to the theory of Controlling Shareholders, anyone who can be called a Controlling Shareholder, and how the legal position held by the Controlling Shareholders in a public company From the results of research, it can be proven that the legal position of the controlling shareholder plays a very important role in a public company because the controlling shareholder controls the company through the people he places in the company's management. And based on empirical facts that occur in a public company in Indonesia which is listed on IDX, the controlling shareholder in a General Meeting of Shareholders has several similarities and differences with non-controlling shareholders.