Tourism in Croatia is developing at a very high speed and brings with it many opportunities such as the creation of new jobs, the development of the complete infrastructure of the destination and the economic growth of the destination itself. However, it should also be considered that tourism leaves behind negative consequences. The most common prepositions for the development of tourism of a certain destination are precisely in its natural beauty and natural resources. This thesis will explore the destination, namely the city of Cres, with its twenty-six island settlements. The main goal of the research carried out on the example of the destination Cres is to analyze the island of Cres itself in terms of sustainability, that is, to establish whether tourist resources are managed in a sustainable way so that Cres continues to develop continuously in the future. The main income on the island Cres comes from tourism, but not everything on the island is subordinated to tourism, while further development is reflected in the document, that is, the development plan for the Cres - Lošinj archipelago until 2027. In the development plan, a vision for developed island is in sustainable economy and a desirable working environment, a smart and green island and the quality of life of the local population, especially for children and young people, because they are the future of the island. In conclusion, the further development of the sustainable development of the island of Cres is manifested in the increasing engagement of the local population by participating in the adoption of strategic plans that are focused on the management of tourist resources in a sustainable manner. The sustainable tourism development of the island is considered to be a connection between the tourist and tradition of island, with balanced use of tourist resources so of tourists with locals and their traditional culture, with optimal utilization of tourist resources, with satisfied economic and social growth.