This graduate seminar is an introduction to the broad field of sociology of gender. The focus of the seminar is, first, to examine gender as a multilevel system of social practices that construct and reinforce the gender binary, which functions as a master binary that creates "women" and "men" as two different and unequal categories through processes that instill and reinforce gendered identities, interactions, and institutions. In the course, students will examine how gender intersects with other domains of inequality, particularly sexuality, race-ethnicity, social class, and nationality.