The purpose of this paper is to provide a concise resource for coaches, coach educators, and coaching scientists by reviewing three common approaches to coaching: the mastery approach to coaching; autonomy-supportive coaching; and the transformational leadership approach to coaching. The theoretical foundations, purpose, evidence base, specified behaviours, and translation into coaching and coach education of each approach are reviewed. Despite diverse theoretical foundations and variations in purpose, there is some overlap in the coaching behaviours prescribed by each approach. However, there is limited empirical evidence to support the use of the three approaches in coach education and this is detrimental to effective and evidence-based coach education. Efforts to integrate theoretical foundations are promising, and a comprehensive prescription of coaching behaviours based on an integration of the three approaches is possible. This approach can potentially lead to cumulative effects on positive athlete outcomes. Future research should elucidate the common and unique contributions of these approaches to athletes' outcomes, and whether they differ by age, sex, type of sport, or competition level.