This article is intended to identify research opportunities for gender scholars in all disciplines. The authors explain why a truly interdisciplinary approach is necessary to study gender and offer their current thinking about how to pursue this goal. They first provide a description of gender as it plays out at the individual, interpersonal, and societal levels. They then give examples, drawing from wage disparities and from rates of sexual maturation, to illustrate the value of treating gender as comprised of inherently linked processes operating at multiple levels of analysis. They argue that gender inherently is a multi-level phenomenon, but that social psychologists from both disciplines tend to limit themselves to certain levels of this analysis in their theoretical and empirical investigations. Finally, they provide some initial thoughts on how to study the interconnectivity across individual, interpersonal, and societal processes.