International community is marked by increasing cooperation of countries at International level, focused on specific field of interest such as economy, environment protection, traffic, etc., as well as tourism. International tourism is characterised by strong supranational component and, considering that more than one country is involved, there is a need of a certain level of uniformity in some tourism aspects. In this matter, the role of International organisations is significant which, through their activities mandatory and dispositive regulations, contribute to the tourism development in trying to overcome the gap between tourism systems of various countries. Besides International organisations, other organisations acting at the European Union level, national entities responsible for the development of tourism in the Republic of Croatia and some regional associations which membership is not exclusively limited to countries but also some regions connected with common characteristic, have the important role in tourism policy creation. When considering the International tourism as unity, both general and specialized organisations should be taken into account, as well as their outputs, regarding if they are binding or not.