This study aimed to determine the effect of employees' job satisfaction on organisational commitment in BRI Sharia Bandung branch. Employing a quantitative approach, subjects of this research were 48 employees of Bank Rakyat Indonesia (BRI) Sharia Bandung branch. Data was obtained from questionnaires and which were measured using two variables: independent variables, i.e. employees' job satisfaction and dependent variable, i.e. organisational commitment. The type of research was verification, and the method used was an explanatory survey with probability sampling technique. Data analysis technique used was a verification analysis with simple linear regression. The findings showed that employees' job satisfaction affects their organisational commitment.