| The purpose of the implementation of investment can only be achieved if supporting factors that hamper the investment climate can be overcome, among others through the improvement of coordination between Central and Regional Government agencies, the creation of efficient bureaucracy, legal certainty in the field of investment, high competitive economic cost and a conducive business climate in the field of employment and business security. Therefore, the legal certainty for foreign investment is a concern according to the provision of the Investment Law in Indonesia, and the authority of the Regional Government to foreign investment according to the Law of the Regional Government. This study is a descriptive analysis conducted by normative juridical approach, because this it is a library research or document study conducted or intended only on laws and regulations concerning investment in Indonesia. Based on the result of the study is found, the legal certainty security for foreign investor according to Capital Investment Law No. 25 of 2007 is in principle the Government will not takeover or nationalized foreign companies in Indonesia, and if it has to takeover, then to the investors will be given compensation in which the amount is determined based on market price (Article 7), and if there is no agreement concerning the compensation or foreign investment disputes in Indonesia occurred, the settlement may be brought to the arbitration board (Article 32). The said arbitration board is the International Center for Settlement of Investment Disputes (ICSID), as Indonesia has ratified the ICSID Convention by Law No.5 of 1968 concerning Dispute Settlement between Foreign Countries and Foreigners Concerning Capital Investment. |