Mentoring matters in and for geography education: it is a significant part of how teachers are educated. Within this book, chapter authors engage with different approaches to mentoring, exploring the importance of knowledge (within, and at, the boundaries of the disciplines of geography and education), experience of practice in geographical education and the desire to enable colleagues to progress in their professional development through the act of mentoring. This chapter sets out the case for subject-specific mentoring before examining the roles of theory and practice in mentoring in geography education. It goes on to present the three key sections of Mentoring Geography Teachers in the Secondary School: Mentoring in geography education; Perspectives and experiences in geography mentoring; and Being a geography mentor.