Terrorism is a multilayered phenomenon which, if to be viewed in its entirety, implies an interdisciplinary approach and parallel research in a number of areas. The reason it is difficult to deal with this social phenomenon is that there is a whole series of different subjective and objective factors that slow down the resolution of the complex problem of terrorism. Croatia is a state that was burdened by intense terrorist activities in the period from 1992 to 2001. The war in Croatia exerted a primary influence on it since it provided favourable conditions for the spread of terrorism. The basic sources of terrorism in Croatia in the past period were accumulated economic, ethnic, social, religious, political etc. contradictions, undesirable social conditions and unrealised ambitions of certain social groups. This article deals with terrorism in Croatia in the mentioned period in terms of: (a) international; (b) insurgent; and (c) domestic terrorism.