When considering Karl Marx’s conception of praxis, numerous relations between it and action research come to the surface. These relations are not only important for understanding the roots of action research, but also future directions of the methodology. Marx’s short, but important text, the Theses on Feuerbach, not only constructs the foundation for Marxian praxis, but also can be read as an action research text, for it stands as an example of how to transform knowledge generation into a practical and active process. Moreover, praxis functions as a mode of epistemology and a revolutionary system that espouses human agency. One can further draw connections between Marxian praxis and action research in terms of how praxis requires researchers to be critical of dominant ideologies and methodologies. Therefore, revisiting Marxist theory, particularly its specific conception of praxis, is a crucial exercise for action researchers, particularly in a context where problems associated with the capitalist political economy continue to profoundly affect people’s lives.