Komodo National Park in East Nusa Tenggara Province is one of 21 model national parks in Indonesia and is one of the first five national parks established in Indonesia. The potential of natural resources in East Nusa Tenggara Province is the existence of a coastline of 5,700 kilometers, this makes the prospect of beaches and waters around Komodo National Park increasingly valuable. Apart from being a natural habitat for rare animals, namely Varanus komodoensis, in Komodo National Park, there are also other endemic animals and vegetation in both land and sea territories. Beach tourism developed at this time is pink beach recreation, while marine tourism is snorkeling and diving activities. These three tourism activities are a supporting attraction for tourists in addition to tourism activities to see endangered animals. The purpose of this study is to make recommendations for the management or policymakers through the design of policies for the development of coastal tourism and marine tourism on Padar Island and Komodo Island in Komodo National Park. The research method uses a survey method using questionnaires to fill out questionnaires by conducting direct interviews with key stakeholders. The research stage is through mapping the development needs of coastal tourism and marine tourism and analyzing key elements, tabulating and analyzing data using the Interpretative Structural Modeling (ISM) method with EXSIMPRO software. The results of the study show that there are 7 stages with 18 key subelements that play an important role in policy recommendations for developing coastal tourism and marine tourism on Padar Island and Komodo Island.