We review research that provides a sociocultural perspective on proenvironmental support. Despite the increasing volume of psychological research on proenvironmental action, there has been a relative dearth of consideration of sociocultural contexts, which poses critical theoretical and practical limitations to understanding and fostering proenvironmental actions across diverse populations. The sociocultural perspective posits that the primary motives driving action are context dependent. Building on this perspective, our research examines significant divergence in key determinants of proenvironmental support, focusing on several sociocultural variables, including national culture (individualism-collectivism), socioeconomic status, and religion. This program of research shows that personal environmental beliefs more directly lead to proenvironmental support in sociocultural contexts that prioritize personal motives over social motives. In contrast, in contexts that prioritize social motives, social influence becomes a more important predictor of proenvironmental support. Solving environmental challenges requires leveraging psychological diversity to motivate people across the globe.