Terrorism as a phenomenon especially comes to the fore at the end of the twentieth century and the beginning of the twenty-first century when, most often, non-state subjects (various terrorist groups and individuals) using different types of weapons and military equipment, plan, organize and carry out terrorist operations, creating great effects (deadly effects, psychological effects, etc.) in the attacking object. The targets of attacks by terrorist groups (terrorist organizations) are numerous, ranging from state institutions to ordinary citizens. The evolution of terrorism conditioned the development of new methods of fighting terrorists, but also the improvement of existing methods of fighting terrorism. One of the ways of fighting terrorism includes the use of electronic warfare systems as part of the operational and combat support in the anti-terrorist operation. Earlier use of electronic warfare systems in the fight against terrorism included the individual use of electronic support assets. The reasons for such use of electronic warfare systems are in the fact that weapons, organization of terrorist cells and planning of terrorist acts were at such a level that it was not necessary to use army units and more complex systems for electronic warfare. The activities of terrorist organizations since the end of the twentieth century and the beginning of the twenty-first century can be characterized as terrorist operations with military features. Terrorist operations with military features have influenced the use of military units in the fight against terrorists, in addition to the use of police units. The use of army units and police units in the fight against terrorists is unified through the process of preparing and executing a counter-terrorist operation. When planning an anti-terrorist operation using army and police forces, it is necessary, among other things, to plan adequate systems for electronic warfare that would provide operational and combat support to army and police forces. That is why it is very important to analyze certain electronic warfare systems that can provide operational and combat support in a counter-terrorist operation that has military characteristics. The contribution of this research is in the improvement of the conceptual approach to the use of electronic warfare systems in the fight against terrorism. Further research should be focused on creating a model of electronic warfare in a counter-terrorist operation.