BackgroundAllied health clinicians supervising healthcare students in workplace learning play a key role in a learner's progression to autonomous practice, yet expert educator practice is not well understood. How expert clinical educators in allied health professions are defined, enact their role, develop educational expertise and bring value to workplace learning is unclear.MethodsA scoping methodology was chosen to understand what is known about clinical educator expertise in allied health, focusing on definitions, characteristics, impacts and development. Searching seven databases, the authors used an iterative, systematic approach to the selection, collation and analysis of peer‐reviewed and grey literature.ResultsWithin 21 included papers, diverse terms and definitions were used to describe expert clinical educators across 9 allied health professions and 5 countries. Expert educator characteristics included advanced skills in facilitating learning, the ability to build positive relationships with learners and a proactive attitude to developing personal supervision skills through reflection. Impacts were identified for learners and educators, and the few sources examining educator development found that expert practice grows in a dynamic, multi‐mode, non‐linear fashion.ConclusionA comprehensive picture of the expert clinical educator in allied health is not yet conceptualised, despite some characteristics being associated with expertise. The differences between expert and less proficient educators are unclear with little examination of the impacts, value or development of expert educator capabilities. We offer a framework for future research and advocate for focused studies that examine clinical educator expertise, to enhance approaches to professional development and recognition of excellence in clinical educator practice.