With the development of non-profit organizations, there has been an improvement in collective responsibility, human solidarity, and thus, citizens were helped. Non-profit organizations are organizations whose primary goal is not to make profit, but to improve society as a whole. Non-profit organizations are funded through donations and the revenue generated by their activities. National parks are the most well-known category of protected areas in the Republic of Croatia, and there are currently eight of them. National parks by their structure are classified as non-profit organizations. The thesis focuses on the operations of Kornati National Park, located in the Šibenik-Knin County. This national park was chosen due to its significant importance in preserving the natural heritage of the Republic of Croatia. Kornati National Park is one of the most beautiful protected areas in the country. Through the analysis of its operations, insights can be gained into the challenges and opportunities of managing such areas, which is crucial for sustainable development and the preservation of natural resources.