The importance of a healthy mentoring relationship, and how to go about achieving one, has been explored in several disciplines, including psychology. However, little of this work has focused specifically on unique ethical issues that may arise while mentoring undergraduate students. The authors provide a definition of mentoring in the context of undergraduate education that takes into account undergraduates' status as emerging adults. We delineate both similarities and differences between mentoring undergraduate students and graduate students. Ethical issues that may arise (...) while mentoring undergraduates, especially around themes of vocation, autonomy and influence, boundaries, power, the priority of the protg's needs, the mentor's motives, and accessibility, are spotlighted. We argue that although there is considerable overlap between mentoring graduate students and mentoring undergraduates, there are issues and concerns unique to working with undergraduates that require explication so that they can be appropriately addressed to the benefit of both protg and mentor. (shrink)