In this study, we extended the Dual Process Model of Ideology and Prejudice by incorporating the Five-Factor Model of Personality (N = 924). Disagreeable people tended to view the social world as competitive, which in turn predicted heightened motivations for group-based dominance and superiority (Social Dominance Orientation or SDO), whereas people low in Openness to Experience and high in Conscientiousness directly expressed heightened security-cohesion motivations (Right-Wing Authoritarianism or RWA). Other personality dimensions were weakly associated with RWA, and these effects were mediated by dangerous worldview. Multiple distinct aspects of personality predict SDO and RWA both directly and indirectly through worldviews, but we found little evidence for the possibility that personality alters the extent to which worldviews (once formed) predict SDO and RWA.