This study aims to find out how Self Efficacy, Perceived Organizational Support and Employee Engagement on Organizational Citizenship Behavior on the Regional Financial Management Agency (BPKD) in Lhokseumawe City. The purpose of this research is to determine the level of Organizational Citizenship Behavior in employees who work at the Regional Financial Management Agency (BPKD) of Lhokseumawe City. The data used in this study was primary data obtained by distributing questionnaires to 75 employees. The data analysis technique used is multiple linear regression analysis which consisting of data instrument tests, classical assumption tests, and hypothesis testing using the help of SPSS software. The results showed that partially self efficacy had a positive and significant effect on organizational citizenship behavior on the Regional Financial Management Agency (BPKD) in Lhokseumawe City, furthermore perceived organizational support had a positive and significant effect on organizational citizenship behavior on the Regional Financial Management Agency (BPKD) in Lhokseumawe City and employee engagement had a positive and significant effect on organizational citizenship behavior on the Regional Financial Management Agency (BPKD) in Lhokseumawe City. These findings provide useful implications for the government to determine strategies related to human resources to improve organizational citizenship behavior in employees.