The development and expansion of tourism region is a complex phenomenon and it is necessary to be studied interdisciplinary. Nowadays, the development of tourism region in Baluran National Park increases rapidly. In this case, the growth and expansion of tourism region has a close relation with sustainability, tourist growth restrictions, and carrying capacity, three aspects must be concerned in managing tourism. The purpose of this research is to manage the sustainability of coastal tourism using carrying capacity concept. Based on the results, there are four coastal tourism activities which suitable in Baluran National Park, there are, beach tourism, snorkelling, diving, and mangrove excursion. Beach tourism in the recreation category with a total area of 92 ha can hold up to 9200 tourists/day, diving area up to 189 ha can hold up to 1512 tourists/day, snorkelling area up to 101 ha can hold up to 673 tourists/day and mangrove excursion with an area of 272 ha can hold up to10880 tourists/day. Thus, the total tourists per day for the coastal tourism is 22.265 person.