This essay reviews and assesses Ninian Smart's contribution to religious education. Attention is given to his account of the nature and purpose of religious education as expressed and developed in a series of works published between the late 1960s and the early 1970s, beginning with The Teacher and Christian Belief (1966) and ending with Schools Council Working Paper 36, Religious Education in the Secondary School (1971), which was produced under his direction. Continuities and tensions in his thought are identified and discussed in the context of recent debates within religious education and the academic study of religion. Smart's case for non-confessional religious education is considered, as is his support for a phenomenological approach to religious education. Although serious criticisms are raised, it is concluded that his work is of abiding significance and relevance to both British education and beyond.