Action research is defined as systematic classroom-based inquiry to solve teacher-perceived problems. It has been a component of education, particularly professional staff development, for the past century under several names although geography educators in the United States have rarely used it for this, or any other, purpose. This paper reviews the literature on action research in order to argue for its use in geography education. A preliminary exploration of action research-based professional staff development is described. The results of the project indicate that action research is potentially useful as a way to guide teachers to reflect on their practice. It is argued that geography educators should include it in their repertoire of reform techniques.