Abstract: Constructivist learning approach asserts that the individual constructs information actively and in a way peculiar to himself or herself interacting with his or her environment rather than just waiting for the information to be transmitted to him or her directly. In constructivist learning environments, students should interact with authentic activities and materials representing the real life. As the authentic learning environments include the problems and complexity present in real life, they provide the students with real life experiences. Moreover, students work cooperatively and communicatively with friends, parents or more advanced others, such as teachers, in school and non-school settings. Consequently, they continue learning both in and outside school. Authentic materials, if used properly in authentic learning environments, can have lots of uses in foreign language teaching though they are not specifically designed to teach a foreign language. For this reason, foreign language teachers should act as a guide for the students to interact with the authentic materials in constructivist learning environments. In addition, learning environments in which authentic materials are used should be organized when training prospective foreign language teachers to set an example for the teachers of the future to use authentic materials in their own classrooms. In that way, prospective teachers will have a chance to see and experience, themselves, the advantages of these materials and points to consider when using them. The aim of the present study is to focus on the importance and the uses of authentic materials in foreign language teacher training program and to come up with some suggestions concerning the matter. As a result of the literature review done, it was found out that using authentic materials in foreign language teacher training program has an important role in their making use of such materials in their future professional lives.