This study examines how micro-level religious effects and macro-level economic contexts shape individuals' attitudes toward premarital sex. It then investigates whether the effects of individuallevel religiosity on approval of premarital sex are contingent on the economic characteristics of a nation, reflected by a country's gross domestic product (GDP) per capita. Multilevel analyses of data from the sixth wave of the World Values Survey (2010-2014) reveal that both individual religiosity and GDP per capita are important predictors of attitudes toward premarital sex. Furthermore, cross-level interactions suggest that individual religiosity has a greater negative effect on approval of premarital sex in countries that are more economically developed. I discuss how these findings speak to theories about religion, economic modernization, and the ways that macro-level contexts are linked with micro-level factors.A substantial body of research showed that personal religiosity is inversely associated with premarital sex (Adamczyk and Felson 2006;Barkan 2006;Jessor et al. 1983;Ogland and Hinojosa 2012;Petersen and Donnenwerth 1997;Regnerus and Uecker 2011;Rostosky et al. 2004;Tanfer and Schoorl 1992). Yet, most of these studies extensively used data from North American and other Western countries, although there are some exceptions (Adamczyk and Hayes 2012; Finke and Adamczyk 2008). Thus, it is unclear to what extent this association holds true across nations in the world. This study fills the void in the literature by investigating how religion influences cross-country differences in attitudes toward premarital sex. In addition, the current study examines how the effects of religion on attitudes about premarital sex depend on the economic context in which an individual is located. There is a rich theoretical basis for this inquiry. First, sociology has a long tradition of interest in how macroeconomic force shapes individuals' behaviors and attitudes (Bell 1973;Inglehart 1997;Marx [1858Marx [ ] 1993. Economic development tends to promote secularism, individualism, and self-expression values, which may lead to more permissive attitudes toward premarital sex. Second, an emerging literature in criminology suggests that