The notion of reflection and reflective practice is defined and perceived variously among scholars. While Dewey perceived reflection as a process of thinking (1933), Schön argued that reflective practice is a skill in which practitioner has to take an action when doing reflection (1983, 1987). The practice of reflective practice is more effective when it is conducted collaboratively. In this paper, the concept of reflective practice, collaboration, and collaborative reflective practice as a potential means of EFL teacher professional learning is elaborated. Finally, Lesson Study (LS) as a collaborative reflective practice model of EFL professional learning is also presented in the paper. Keywords: Reflection, Reflective Practice, Collaboration, Lesson Study, Teacher Professional Learning