Iran’s maritime realms are regulated based on the rule of maritime areas of Iran (which were approved in 1993) internal rules and international laws. This study aims at comparative investigation of rules of Iran’s maritime areas with the convention of the Law of the sea. Also, it aims at analyzing the rule of maritime areas with respect to international and internal laws and legal rules. Differences and ambiguities of rule approved by Iran parliament with the content of 1982 convention, opportunities, incomplete potentials and legal deficiencies of rules of Iran’s maritime areas are explained by comparative investigation of rules of Iran’s maritime areas with the convention of 1982. This research is an applied research from purpose perspective and the research methodology is based on descriptive- analytic along with the content analysis of the related documents like rules of Iran’s maritime areas and the convention of the Law of the sea.