Development of tourism has led to the emergence of turist agencies: tour operators and turist mediators. Tour operators are defined as: the economic operator which by combining the services of various suppliers creates and organizes pausal journeys in large on ito behalf and for unknown buyers, and on this bases it continuously achives the main source of its revenue. Tourist agencies are defined as a specific tourist company which achives its activity through a series of tasks by conecting the market poles of touristic offer and demand, spatially and structurally divided, conslidating diversified capacities and content of the offer on the one hand; and by forming a demand of heterogeneous mass of potencial consumers, through the process of market motivation, creating a homogeneous group of real consumers- on the other. The difference between the two is that tourist agencies mediate the sale of other agencies, while tour operators create arrangements for unknown clients. Today in Croatia there are 490 agencies which, by their action and the tendency toward high-quality and stable business favor the development of tourism, which our country depends heavily on.