The existence of dual system of responsibility is considered to be a constant feature of international law, which nevertheless reveals many shadow areas at the same time. If international crime is committed by a state organ it entails both state responsibility and individual criminal responsibility. Presented master thesis is focused on the concurrence between state and individual responsibility for the crime of genocide. Master thesis analyzes this issue from the methodological and doctrinal perspective, it reflects the position of International Law Commission. Finally, personal and material prerequisites of concurrence between state and individual responsibility for the crime of genocide are elaborated.