The article deals with deterrence of terrorism. The aim is to assess validity of a proposition that it is possible to deter terrorist groups, but there are some specifics in comparison to the deterrence of states. First, we determine deterrence threats which can be applied in relation to terrorist groups and discuss possible restraints of their application in practice. This is followed by an analysis of whether deterrence can be applied against all types of terrorist groups without distinction, where we develop a model of classification of terrorist groups according to the goals which they pursue. So far, the topic of deterrence of terrorism has not been discussed in detail in the Czech academic texts. This article thus seeks to fill this lacuna and highlight the benefits of applying deterrence strategy to the terrorist groups.