Background: Clinician scientists (CS) play a role in bridging the gap between research and practice. However, the role of a CS is less established for healthcare professionals in rehabilitation in comparison to medicine. Objective: The purpose of this scoping review was to explore different roles and models of a clinician scientist in rehabilitation and compare this to medicine and nursing. Methods: This review was structured according to the Arksey and O'Malley (2005) framework for scoping reviews. A literature search was conducted from the following databases: EMBASE, MEDLINE, AMED and Web of Science; a grey literature search was conducted from MacSphere, ProQuest, Duck DuckGo, and Google. Results: 95 articles met the inclusion criteria with 73 studies in medicine, including nursing, 10 articles from rehabilitation and 12 articles with mixed professions. The main barriers identified for rehabilitation involved time constraints and lack of funding for research, whereas primary facilitators included development of formalized training programs and presence of mentorship programs. Conclusion: The role of the clinician scientist is more established in medicine compared to rehabilitation. There is a need for an established career trajectory accompanied with training programs. Further studies are required to shape the role and development of secure funding models for CS positions.