The popularity of EMI-based research has increased along with the interest in EMI programs globally. It is evident there is little thorough analysis study that identifies the orientation of the subjects covered in the dissertations in EMI in Turkey. This perspective is taken in order to analyze the thematic distribution of postgraduate theses on EMI written in Turkey between 1987 and 2022 and stored in the Higher Education Institution Thesis Center Database. The data were gathered using the thesis review form the researcher devised, and they were then subjected to content analysis. It has been acknowledged that the majority of Turkish postgraduate theses generated in EMI are dissertations that evaluate opinions utilizing survey research as recurrence of similar theis studies have surfaced. There are very few experimental investigations in EMI from a methodological standpoint. Despite the national interest and investment in the adoption of EMI in Turkish Higher Education, the present thorough review revealed that there are relatively few postgraduate studies on EMI-oriented professional development, interactive teaching pedagogy in EMI, the development of pedagogical skills in EMI lecturers and the perspectives of postgraduate level students and lecturers. It appears that an EMI professional development program is important to promote the implementation of EMI to support teaching in English medium.