Abstract In this article, I explore recent work on realist political theory and international politics. I discuss how scholarship on the topic emanates from two different fields—International Relations and political philosophy—and argue that there is a good case for greater engagement between them. I open by delineating various kinds of realism, showing that the term covers a wide variety of methodological and political approaches. In particular, I suggest, it is important to recognize the difference between liberal and radical approaches. The remainder of the essay examines assorted examples of realist international political theorizing, work that ranges from attempts to rewrite the canon of 20th century political thought to contributions to the vibrant global justice debates.