Leadership is an important life skill that can and should be developed in young people. Sport and physical activity contexts have been identified as a prime venue for developing leadership in youths, but they are underused. Coaches and physical educators can play an integral role in helping their athletes and students to develop leadership skills. This article provides a brief summary of the principles of developmental youth leadership, including those derived from the general psychology and sport psychology literatures. It also describes what coaches and physical educators need to know about youth-leadership development practices using a case study approach.