Purpose: The purpose of this article is (1) to highlight the dual, Janis-faced, nature of the study of tourism as an industry and as a field of study; (2) to discuss how education is used to promote sustainable tourism and prevent overtourism, both in the academic arena as well as where tourism occurs; and (3) to offer suggestions concerning the value of education as an avenue for harmonizing the Janus-faced character of tourism, in order to foster a tourism industry that can better achieve global sustainability. Design/methodology/approach: This paper combines literature review with assessment. The authors use existing literature on overtourism, tourism education, and critical tourism studies to provide insights into how education can h...