The concept of sustainable development is being developed due to the needs in all areas of human activity, it's development particularly stands out in the sphere of tourism. Uncontrolled exploration of natural resources, high number of tourists and setting the wrong main goals in development are only a few characteristics of the environment that unables sustainable development of the environment which leads to a discord in community. Sustainable development is being developed based on environmental, economical and socio-cultural sustainability through which the synergies are achieved in communities with the main goal of this concept bein the preservation and development of current opportunities for future generations. In purpose of analyzing the sustainable development of tourism, indicators are being used, that is, the indicators that differ depending on the research needs. Sustainable tourism development seeks to develop a system which will achieve the balance in satisfying the needs of all interest groups in community, sustain competitive market position despite the appearance of new destinations and satisfy current needs without compromising the needs of future generations. Using comparative analysis of indicators of sustainable development, we obtained the conclusions about the position of the Republic of Austria in comparasion with the Republic of Croatia and European Union. We also obtained conclusions regarding sustainable tourism development in Austria and sustainable tourism development in Croatia.