Abstract The Present study aimed at developing EFL third year student teachers' instructional skills and reflective thinking through the use of Thinking Maps. Participants of the study were randomly selected (N=40) from EFL third year student teachers' enrolled in Faculty of Education, Fayoum University. The researcher prepared an instructional skills observation sheet, a reflective thinking scale and a thinking map-based manual . Having pre administered the study instruments, the study group was taught using Thinking Maps. The same instruments were post administered at the end of the treatment. The results showed that Thinking Maps were effective in developing student teachers' instructional skills and reflective thinking. The study concluded with some recommendations and suggestions for the students and faculty members. Also, suggestions for further research were provided.