This research note explores aspects of the demand for terrorism using data from the Pew Institute. With these data from 7,849 adult respondents within 14 Muslim countries, we explore who supports for terrorism. We find that females, younger persons, and those who believe Islam is under threat are more likely to support terrorism. Very poor respondents are less likely to support terrorism and those who believe that religious leaders should play a larger role in politics are more likely to support terrorism, all else constant. Because these effects vary throughout the countries studies, we argue that interventions must be highly tailored, using detailed demographic and psychographic data.