Due to their natural beauty and diversity protected areas attract a large number of visitors. Thus, visitor management is a challenging process handled by the public institution of protected areas. An additional challenge is related to two main and conflicting functions of protected areas: a protective function aimed at preserving the original natural and landscape values of the protected area and a tourist function. This paper relies on the primary research of the structure and attitudes of visitors to the Krka National Park which was conducted in 2019. The aim of the paper was to conduct market segmentation, identify fundamental differences between segments and make a comparison with regard to satisfaction with the elements of the Park's offer. According to selected characteristics of the arrival of visitors, segmentation was performed using cluster analysis where the four-cluster solution was selected as optimal. Cluster analysis was performed by a non-hierarchical method of partitioning around medoids and by using Gower distance. After the analysis of variance, it was found thatclusters also significantly differ in the level of satisfaction with the offer of the park, which was compared separately for 19 different elements of the Park`s offer.