Two studies were conducted to provide reliability and validity support for a new anti-Arab prejudice scale. The scale was designed to fit to the European context and showed very satisfactory reliability. Moreover, both studies provided convergent validity support. Anti-Arab prejudice was correlated with authoritarianism, anti-Semitism, and conservatism. The correlation between the new scale and an adapted version of McConahay's (1986) Modern Racism scale was very strong. Furthermore, the second study provided predictive validity support. Scores in the new scale explained 20% of the variance in an ulterior actual behavior (to return a signed form supporting an association aimed to defend European values and culture against Islamization).