Sovereignty is the supreme power of the state; it also means every authority which gives a final decision. The rights to self-governance without interference from out-side. In Islam, sovereignty means the source of power. The sovereignty of Allah is not limited to religious matters alone, but extends over political matters as over all aspects of life. Statement of the problem of this paper contained a critical analysis of the concept in Islam, constitutional and Political, at this point some question may occur such as: what is the concept of Sovereignty, in both subjects. Limitations of this research consisted the constitutional and Political and it highlight the different between Sovereignty of the Nation and that of God finally it discussed the characteristic of God. The paper signified and aimed the theory of Sovereignty and it established the tangible experience and it made critical compares on the topic and authority in Islamic State. The method of this research is data collection from both primary and secondary sources, of the Sovereignty. These materials include text books; journals published and unpublished manuscripts from library and history bureaus. The research will be analytical analysis.