This study aims at exploring Authentic Materials used in teaching speaking for university students. A case study method is implemented. The study was conducted at the language center of a university in Indonesia in the first semester of the 2018/2019 academic year. The data were collected by three instruments: interview, classroom observation, and document analysis. The data were analyzed using an interactive method. The results show that the teachers used three kinds of AMs in the classroom: audio material such as recordings and broadcast news, audiovisual material such as videos, and printed material such as photos, pictures, images, articles, and a map. It is found that the most used type is video since it can be very useful to develop speaking, listening and pronunciation skills. The results of this study also reveal that teachers might take useful AMs from selected websites and combine them with the course book in order to support teaching-learning activity.