The discipline of learning is one of the factors increasing learning achievement. With improved learning achievement, educational goals can be achieved. Discipline of students can be seen when students are able to place and control themselves while in school, then violations do not occur and the atmosphere of learning becomes comfortable and conducive, so as to achieve educational goals (Wiyani, 2013: 158). Classes that are comfortable and conducive make the learning process in class effective, so that optimal student learning achievement. Based on observations made by researchers at Junior High School 26 Malang, there are a number of disciplinary problems including students still outside the classroom when the bell rings, there are also students who are late for school, do not pay attention to the explanations of educators, and do not do the tasks given by educator. Habits carried out by students affect the learning achievement of students. Likewise, students with a discipline of learning have high learning achievements, whereas students who are not disciplined have a low learning achievement. The discipline of learning is one of the factor to improve the chance to get learning achievement. When the achievement was improved, educational goals can be achieved. This thesis consists of two variables, which is the discipline of learning (independent variable/ X variable) and learning achievement (dependent variable/ Y variable). The purpose of this study was to identify a significant effect between learning discipline on student achievement in Islamic religion subjects in 8th grade Junior High School 26 Malang. This thesis research uses quantitative approach and type of descriptive research. The study population consisted of 207 students, then samples were taken using the Slovin formula and produced a sample of 136 out of 207 students, then stratified sampling with details of classes VIII A and VIII B with a sample of 22 people, classes VIII C to VIII F with a sample of 23 people. Data collection procedures using questionnaire research instruments or questionnaires and documentation. Data collection techniques using questionnaires totaling 30 items and distributed to respondents online, while the technique of collecting data using documentation is done by asking students' learning outcomes from Islamic subject teachers and school profiles to the TU (Administration) section. Data processing in this study uses Simple Linear Regression Analysiswith the help of SPSS computer version 20.0. Learning discipline is one of the factors increasing student learning achievement. Based on the research instrument using a questionnaire distributed to 136 students online, the results of the study of student learning discipline in the subject of Islamic education grade 8th in Junior High School 26 Malang amounted to 68.7%, with the meaning of learning discipline included in the category good (Riduwan, 2011: 15). Learning achievement is a benchmark for students' understanding after the learning process. Learning achievement is indicated by changes in student behavior in the affective, cognitive, and psychomotor aspects (Sudjana, 2009: 3). The 2013 curriculum says the KKM value in Islamic religious education subjects is 75. Based on data collection techniques using documentation, the average grade of Islamic religious education grade 8th in Junior High School 26 Malang is 83.1 (good category). Based on data analysis, it can be concluded that there is a positive and significant influence between learning discipline on learning achievement in Islamic religion subjects 8th at Junior High School 26 Malang with significance value 0.00 < 0.05, then H0 is rejected and Ha is accepted.