The aim of this study was to describe the different ways medical teachers understand what constitutes a good teacher and a good clinical supervisor and what similarities and differences they report between them. Data was gathered through interviews with 39 undergraduate teachers at a medical university. The transcripts were analysed using a phenomenographic approach. Three categories regarding what it means to be a good teacher and clinical supervisor respectively were identified. Similarities between the two hierarchies were seen with the most inclusive categories of understanding what it means to be a good teacher or supervisor focuses on students' learning or growth. In the third category a good teacher and supervisor is seen as someone who conveys knowledge or shows how things are done. However, the role of being a clinical supervisor was perceived as containing a clearer focus on professional development and role modelling than the teacher role did. This is shown in the middle category where a good clinical supervisor is understood as a role model and someone who shares what it is like to be a doctor. The middle category of understanding what it means to be a good teacher instead focussing on the teacher as someone who responds to students' content requests in a partially student-centred perspective. In comparing the ways individual respondents understood the two roles, this study also implies that teachers appear to compartmentalise their roles as teachers and clinical supervisors respectively.