Korean teachers nowadays seem to be confused by their identity more than ever. This can be easily seen from news articles or researches, which show that teachers’satisfaction rates decreasing, teachers’exhaustion increasing, teachers stress getting higher, etc. Above all, according to Riss, more than 100 research papers on teacher identity have been released each year since 2010. This is evidence that today’s Korean teachers are in the middle of times that make it very difficult to find who they really are. In this study, I will analyze the periodic and structural contexts which cause this current teacher identity disorder. According to researches, the influence of postmodernism, the neo-liberalism in education, and the discourse of teacher professionalism are all examples of those contexts. They all serve as conditions in which the relation between oneself as a human and teacher is easily divided. Under these conditions, what is now required for teachers is to restore the existential and ontological identity that coordinate the teacherly self as a human being. This study suggests that the search for existential identity can be opened by philosophical approach, instead of the dichotomical studies of teacher identity that rely on the quantitative or qualitative method. In this study, I will explore the possibility of a philosophical identity by introducing the concept of identity by Parker Palmer, Charles Taylor and Hannah Arendt.