This study aims to find the effectiveness of role play method toward the students' motivation in English conversation for the first grade students at MTs As'adiyah No. 49 Bola Aserae -Belawa academic year 2016/2017. The method used in this study was quantitative research through pre-experimental method by using one shot case study pre-test and post-test design. Before the treatment, the reseracher did the pretest in one class. Moreover, the researcher taught English conversation by role play technique in the experimental class. The last, the researcher conducted the post-test to know whether a role play technique was effective for teaching English conversation in experimental class. As the quantitative method, the researcher analized the data by using the t-test (4.37) which was higher than t-table value (2.093). The result showed that there was significant difference on the students' speaking achievement taught by using role play. The students' mean score of the pre-test of the experiment class was 52.4. Then, in the post-test, the mean score of experiment class was 65. Therefore, hypothesis H0 was rejected and H1 was accepted. It could be said that role play method was effective in teaching English conversation toward the students' motivation for the first grade of junior high school students.Keyword: Role Play, Students' Motivation. A. INTRODUCTIONnglish became the most essential languages in the world. Almost people from many different countries around the world used it to communicate. The area of English had always become a special interest. This indicated that learning English language was not only learning vocabulary and grammar, but also it tried to use or apply that knowledge into communication activities. This thing came from the importance of English in any scope of our lives. Edge (1993:25) states that British trade, followed by colonial and imperial expansion, English spread around the world. Since then, the military and economic dominance of the United States of America had confirmed English as the international language of present historical period. As a consequence, English served for many people as a bridge into the worlds of higher education, science, international trade, politics, tourism or any other venture which interested them. At the same time, English served for many times many more people as a barrier between themselves and those some fields of interest. Many E Samsibar,St. Wahyuddin Naro., The Effectiveness of Role Play Method … 108 people in their own countries were not be able to become doctors, for example if they cannot learn English well.In international relationship, English speaking ability is very important to be able to participate in the wider world of work. The speaking skill was measured in terms of the ability to carry out a conversation in the language. This reality made teachers and parents thought that speaking ability must be mastered by their students and children.Based on the previous reasons, English teaching had focused on teaching the English language. ...