YouthMappers brings together university students coalesced around institutional chapters carrying out collaborative mapping to address humanitarian and development concerns. Beginning at three universities, in six years, YouthMappers has grown into a global movement of nearly 300 chapters in more than 60 countries. This success, in part, is attributed to the strong emphasis on mentorship in the YouthMappers structure. In this book chapter, mentors from Italy in Europe, Panama in Central America, the United States of America in North America, South Africa, and Uganda in Africa share their reflections on the role of mentoring in their YouthMappers chapters. They share about the nature of their chapter activities, how mentoring is effected, what has been successful, and the challenges faced. As YouthMappers continues to grow, the role of mentors will remain central to attaining the YouthMappers mission.