This study aims to analyze the influence of Job Involvement and Organizational Commitment on the Organizational Citizenship Behavior (OCB) of Civil Servants (PNS) at UPTD Puskesmas Korpri, Kubu Raya Regency. The research uses an associative quantitative approach with 36 respondents selected using a saturated sampling technique. Data were collected through questionnaires and interviews. The regression analysis results show the equation Y = 1.895 + 0.241X₁ + 0.312X₂ with a correlation coefficient (R) of 0.630, indicating a strong relationship category, and a determination value (R²) of 39.6%, while the remaining 60.4% is influenced by variables outside the research. The F test results indicate that Job Involvement and Organizational Commitment simultaneously have a positive and significant effect on OCB. The partial t-test results also show that Job Involvement and Organizational Commitment have a positive and significant influence on OCB. In conclusion, employee involvement and commitment make a real contribution in shaping organizational citizenship behavior within the health center environment. Future researchers are suggested to consider adding other variables such as job satisfaction, transformational leadership style, organizational culture, work environment atmosphere, work motivation, or work-life balance. By including these variables, the results are expected to provide a more comprehensive picture of the factors influencing organizational citizenship behavior (OCB), especially in health service institutions.