How does the public think about foreign affairs, and how do these public preferences shape foreign policymaking? Over the past several decades, scholarship on public opinion and foreign policy has proliferated, partially due to a growing interest in the “first image” and the ways in which individuals matter in international relations, partially due to an experimental revolution that gave political scientists new methods they could use to study public opinion, and partially due to a range of searing debates—on topics ranging from the Iraq War to globalization—whose fault lines political scientists attempted to map. Scholarship in this area is thus so vast that it is impossible to comprehensively capture in an annotated bibliography of this length. Instead, the discussion that follows focuses on a curated sampling of the field, focusing, in particular, on six sets of substantive questions, drawing on a mix of classic and contemporary scholarship. It begins by reviewing what we know about how foreign policy attitudes are structured, before focusing on public opinion about two different areas of foreign policy: the use of force, and foreign economic issues like trade and investment. It then turns to the effects of sex and gender, along with the role of cue givers in shaping foreign policy preferences—whether partisan elites, international organizations, or social peers. It concludes by reviewing the relationship between public opinion and foreign policy, whether in democracies (as in theories of democratic constraint and accountability), transnational public opinion (as in theories of soft power and anti-Americanism), or in nondemocratic regimes, a relatively new area of research.