Each educational institution has an organization for its students, especially at the junior high and high school levels. Maybe we are familiar with the name, namely the Intra-School Student Organization (OSIS). This needs to be considered because the importance of an organization for students is considered important because the Student Council is a forum to facilitate students to be able to do the tasks that are their responsibility for the benefit of the school and all students. Just like the program carried out by the student council must run according to expectations and be a good example for other students in acting and speaking. With the presence of the Student Council, it is hoped that it will be able to encourage students to build their leadership character through the tasks that have been given. This study uses descriptive-qualitative research, using data collection methods such as: observation, interviews, and documentation. With the above explanation, it raises the formulation of problems about how the student council efforts in building student leadership character and how important the role of the student council is in building student leadership character. Through the results of research conducted by researchers, the efforts of the student council at the school have been carried out in accordance with the program made at the beginning of the school year, as well as the basic student leadership training program and the flag ceremony. Then the role of the student council in building student leadership character is by enforcing student discipline and fostering physical and spiritual training. Keywords: Student Council Role, Character Building, Students