Selecting appropriate activities and their distribution in natural areas is one of the most important issues in tourism management and planning in natural ecosystems. Accordingly, in the present study, while identifying suitable areas for recreational activities development that are demanded and can be developed in the mangrove forests of Hara Protected Area (PA), these activities were prioritized according to the capabilities of the natural areas and the effective criteria for their development. The criteria were selected based on previous documents and studies, as well as experts' viewpoints. These criteria were standardized in the numerical range of 0 to 1 in a linear path and then weighted using the ANP model. Then, for each criterion, a spatial map was prepared in Arc GIS software, and the Topsis method was used in Topsis Solver software to prioritize recreational activities. As the results revealed, the Zoning of recreational activities in this area includes 4 options of how to combine the recreational activities demanded in the mangrove forests of Hara PA. Based on the ranking of activities, the highest priority is related to option 2, and the next priorities include options 3, 1, and 4, respectively. In general, measuring the proportionality of recreational activities in tourism destinations, especially in PAs that have legal prohibitions and potential biological and protective restrictions for human activities development, is essential and can lead to proper planning and management. Considering that the mangrove forests of Hara PA are among the valuable protected reserves of the southern coasts of the country, prioritizing recreational activities in suitable areas and outside the protection zones of the region can help to sustainably use the capacity of natural resources and the appropriate distribution of recreational activities in the area while protecting these natural habitats.