The emergence of the Ukraine-Russia war led to fear, worry and anxiety among individuals, mostly in the immediate neighbor countries of Ukraine. The purpose of the present study was to develop the Fear of War Scale (FOWARS), aiming to fill the gap in the literature that currently is scarce in valid assessment tools for measuring the fear of war. The sample of the study consisted of 722 Hungarian speaking participants, mainly from Romania and Hungary. Exploratory factor analysis evinced a two-factor model of the newly developed scale, and the final version fulfilled the criteria of the confirmatory factor analysis. The 13-items FOWARS has robust psychometric properties and proves to be appropriate for fear of war assessment in the general population. The phenomenon is measured on two factors, namely experiential and physiological dimensions of fear. The scale is available in the present paper in three languages: English, Hungarian and Romanian.