While business tourism is one of the oldest forms of tourism, congress tourism is a relatively young phenomenon and has therefore become the subject of much researches. There are many different definitions of congress tourism, and the most common is that it is a specific form of tourism in which the main motive for travel is not rest but active or passive participation of individuals in gatherings and events of different character. Congress visitors are not idlers due to they travel because of a specific need that is the most often related to their workplace. Today congress activity is on the rise and represents a very important potential for extending the tourist season and "cures" the very high seasonality of Croatian tourism. Seasonality in tourism is a temporary imbalance in tourism activity that manifests itself through the number of visitors, their consumption, traffic on highways and other forms of transport, and through employment and the degree of attendance of attractions. The consequences of seasonality can be mitigated through various selective forms of tourism. With a quality congress offer, Dubrovnik manages to reduce the negative consequences of seasonality. Dubrovnik has all the prerequisites for the development of congress tourism; favourable geo-traffic position, connection by land, air and sea, brand, accommodation capacities, preserved cultural and natural heritage. However, it lacks a quality multi-purpose congress centre to accommodate a larger number of participants along with better transport links.