This paper surveys the literature on gender differences in religiosity and on how religion shapes gender-related economic and social outcomes. Part I examines why women tend to be more religious than men, reviewing leading explanations from sociology, economics, and psychology. Part II analyzes how religion affects gender norms and attitudes, education, labor market participation, fertility, health, legal institutions, and discrimination. Across domains, we distinguish between effects driven by individual religiosity—such as beliefs and religious practice—and those driven by religious denomination. We emphasize studies that employ credible causal identification strategies, including natural experiments, instrumental variables, and policy reforms, while also reviewing correlational evidence for context. Overall, the literature suggests that religious teachings and participation often reinforce traditional gender roles, influencing women’s education, labor supply, and fertility decisions, though important heterogeneity and exceptions exist. We also highlight instances in which secular reforms or religious movements have altered these outcomes. The survey concludes by identifying gaps in the literature and outlining priorities for future empirical research.