Objective: The present article concerns the development of a taxonomy model for organizing and classifying all aspects of rehabilitation psychology from an integrative level–dimensional conceptualization. This conceptualization is presented as an alternative to a primarily categorical approach to classification. It also assumes a continuity perspective for all aspects of behavior and experience. Design: Development of this taxonomy model involves organizing information relevant to levels/domains of all aspects of behavior and experience, and to constructs describing their underlying components conceptually as well as dimensions which constitute the measurable basis of constructs. Results: A taxonomy model with levels/domains, representative examples of constructs and dimensions is presented as a foundation for development of the present taxonomy model, with specific relevance to rehabilitation psychology. Conclusions: This integrative level–dimensional taxonomy model provides a structure for organizing all aspects of rehabilitation psychology relevant to understanding, assessing, and influencing the rehabilitation process. Suggestions for development and research are provided for the taxonomy model.