As a student and disciple of Karl Popper and longtime managing editor of Philosophy of the Social Sciences, Ian C. Jarvie extended the notion of Critical Rationalism to be useful in anthropology, aesthetics, film studies, and various social sciences. In this Festschrift, contributors from a range of interests and disciplines engage with the Popperian legacy and Jarvie’s scholarly and editorial work in Critical Rationalism to contextualize it in the broader, contemporary intellectual landscape. These original essays not only honor Jarvie’s legacy, but expand it to cross the philosophical divide between analytic and continental schools of thought. In so doing, the authors bring the state-of-the-art achievements of Critical Rationalism to the forefront of current academic debates.