Abstract Relevance of religious understanding with the Social Isnteraction of State High School Students in Tanahsareal Bogor City Research from SMAN in Tanahsareal Bogor city, was honored by 331 people. The methodology used in this study is a quantitative approach using a questionnaire as an instrument, with a sample of 331 from the eleventh grade students of Public High Schools in Tanahsareal Bogor City. The results show that there is a positive relevance between understanding religion with students' social interactions. The results of the analysis of the two research variables obtained the relevance between religious understanding and social interaction calculated by Pearson. Correlation obtained coefficient value of 0.868. The value of the coefficient of determination in this analysis obtained a value of 0.754, which means that 75.4% of students' social initiator variables could be from religious examination variables. The remaining 24.6% is removed by other causes. The regression equation is Ŷ = 36.624 + 0.618 X. Based on the results of these studies it can be stated that understanding religion (X), has relevance to student social interaction (Y). This is very relevant to the relevance between religious understanding and social interaction among high school students in Tanahsareal Bogor City.