The study aimed to develop a cross-cultural youth violent extremism scale (YVES) that considers the within and between cultural differences and to develop a scale that can be applied and tested in a single or a group of countries and cultures. The future use of the scale can identify the unique practical concerns related to violent extremism. A sample of 6726 young students was selected from 15 Arab states and authorities. Scale generation, scale refinement, and scale validation were the three stages followed in developing violent youth extremism. Using literature review and nomological network to present the scale dimensions and the Correlation to its dimensions and other relevant constructs (LSC, LSE, and criminality scale. A Principal Component Factor analysis with Varimax with Kaiser Normalization produced six factors (29 items). A significant positive relationship was found (r=.651, α = 0.000), a sign of the validity of the scale. The scale reliability was strong and was estimated at 0.98 using Cronbach's Alpha. The construct validity of the scale was estimated by calculating the Correlation between the Youth Violent Extremism scale and Low self-control. A significant positive relationship was found (r=.651, α = 0.000), a sign of the validity of the scale. The scale reliability was also strong and was estimated at 0.98 using Cronbach's Alpha