This study aims to determine the effect of situational leadership, work environment, competence, and motivation on employee satisfaction at the National Library. The research population is the National Library employees who work in the Deputy for Library Material Development and Information Services, with a total sample of 195 people. The design of this research is quantitative research with a data analysis method using multiple linear regression. The results of the study state that situational leadership has a positive and significant effect on employee job satisfaction, the work environment has a positive and significant impact on employee job satisfaction, competence has a positive and significant impact on employee job satisfaction, and motivation has a positive and significant impact on employee job satisfaction. Situational leadership, work environment, competence and motivation together have a positive and significant effect on employee job satisfaction.