ABSTRACT Muhammad Roni, 2016, The Implementation of Debate Technique in Teaching Speaking (An Experimental Study at English Department Students of STAIN Malikussaleh). Thesis of Graduate Program in English Language Education, Syiah Kuala University, Darussalam, Banda Aceh. Advisors: (I) Prof. Dr. Usman Kasim, M.Ed., (II) Dr. Asnawi, S.Pd., M.Ed. Keywords: Teaching Speaking and Debate Technique This research was conducted to investigate the effectiveness of debate technique in teaching speaking to the third semester students of STAIN Malikussaleh, Lhokseumawe. This was a quasi-experimental design. There were two classes selected as the sample of the research – i.e. experimental class and control class. Each class consisted of 30 students and the total of the sample was 60 students. The data of this research were collected by giving tests: pretest, posttest and questionnaire. The collected data were analyzed by using SPSS 17 to find out the difference between the experimental and control groups in terms of speaking skill. The percentage formula was used to analyze the students’ responses toward the implementation of debate technique in the experimental group. The result indicated that the mean score of the experimental group in the post-test was 56 93 which was higher than that of the control group in the post test (61.16). The significance value of both the experimental and control groups in the post-test was 0.35 which was higher than α=0.05. It can be concluded that H0 was accepted and Ha was rejected. Therefore, there were not any significant differences in terms of speaking ability between the students who were taught speaking by using debate technique and those who were not taught speaking by using debate technique. Although Ha was rejected and there was no significant difference on the students’ speaking achievements after using debate technique, the achievements of fluency, vocabulay and comprehension have improved significantly where both of the significance values are lower than α=0.05 (0.00