This study aims to analyze the mediating role of job satisfaction on the effect of person-job fit and person-organization fit on the organizational citizenship behavior of PDAM Tirta Binangun Kulon Progo employees. This research is a quantitative study that uses primary data collection with questionnaire instruments. The study involved 131 employees whose data were taken by census. https://safeersappliancers.shop/product-category/hoover-hmn7182xk-1-70cm-frost-free-american-fridge-freezer-stainless-steel/