ABSTRACT Zahrina. 2016. Using Authentic Teaching Materials to Improve Students’ Reading Comprehension on Islamic Economic Law (A Classroom Action Research at Islamic Economic Law Departement of Al-Hilal College Sigli) Advisors: (1) Dr. Sofyan A. Gani, M.A. (2) T. Zulfikar, M.Ed., Ph.D Keywords: Authentic Materials, Islamic Economic Law, reading comprehension This research was conducted to describe the process of authentic materials implementation in teaching reading comprehension for Islamic Economic Law students of Al-Hilal College, Sigli; to find out if authentic materials improve Islamic Economic Law students of Al-Hilal College, Sigli in reading comprehension; to describe if the teaching of reading using authentic materials helps the lecturer improve her teaching competent and to find out the students’ response to the authentic materials implementation in teaching reading comprehension. As a matter of fact, during teaching English the writer (as the lecturer) presented reading materials taken from the textbooks and they were less connected to the need of students of Islamic Economic Law Department. The materials caused the students discourage to learn reading comprehension. Those problems encouraged the writer to revise the reading comprehension materials. The writer decided to use up to date authentic materials taken from websites and online newspaper. The subjects of the research were the writer and 37 students of first semester of Islamic Economic Law Department, Al-Hilal College, Sigli. The instruments used in this research were observation check-lists, test, questionnaire, and document (field notes). The data were analysed by using qualitative and quantitative techniques. Furthermore, there were three cycles in this research. Each cycle consisted of three meetings. The writer went through the procedure of the research: planning, implementing, observing and reflecting. The result of observation check-lists showed that the writer reached the improvements from first to last cycle, respectively marked by 76.15%, 86.15% , 87.69%. Moreover, observation check-lists also exposed the students’ improvements – they increased significantly by 74%, 87%, 89% in each cycle. Additionally, the students’ test result avarage attained a positive achievement, it moved up from 38.37% to 74.5%. The questionnaire result proved that the students’ perceptions on significance of using authentic materials were 91%, while 96.8% agreed with the useful of the texts presented during teaching learning. Lastly, through the document- i.e. field notes, the writer noticed that the students’ vocabulary related to Islamic Economic Law increased.