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The utilization and allocation of areas in Indonesia, especially Lombok Island as a beach tourism location, is an ample opportunity for tourism development. Kuta Mandalika Beach, Tanjung Aan Beach, and Selong Belanak Beach have different physical and social characteristics as tourist resources for the Mandalika and Buffer Areas. The research uses a quantitative methodology based on scoring, reflected in the field survey, data processing results, and descriptive analysis. Based on the study's results using eight parameters of physical aspects (beach type, beach width, water base material, depth, current speed, slope, hazardous biota, and freshwater availability and one social aspect (4A Components; Attraction, Accessibility, Amenities and Ancillary). The Tourism Suitability Index (TSI) for Kuta Mandalika Beach is 2.71, Tanjung Aan Beach with a score of 2.51, and Selong Belanak Beach with a score of 2.57. The result shows that the three beaches that focus on the research focus are very suitable for developing into beach tourism-based recreational locations, both within special economic and buffer zones. The condition of suitability on the three beaches is undoubtedly a shared responsibility to establish the Central Lombok Regency area by relying on the tourism sector, which can support regional development.