The modern police formation to which the Police in Poland aspires cannot be limited only to independent execution of tasks. Performing statutory tasks by the Police is related to undertaking various forms of cooperation and interaction with legally and organizationally diverse entities. Apart from national cooperation, legal regulations impose an obligation to cooperate with police forces of other countries and their international organizations, as well as with European Union bodies and institutions. The subject of deliberations is widely understood international cooperation of the Police and the role of entities responsible for its conduct. The areas of cooperation and forms in which it is undertaken have been investigated. Special research attention was also paid to legal regulations relating to police activity on the international arena. In the study attempts were made to assess the current system of international police cooperation.