Objectives: Integration of religion and spirituality in the workplace help people to be more satisfied with their job. The aim of the present study was to explore the role of religious beliefs, faith at work, and spirituality in the prediction of job satisfaction among rehabilitation experts. Methods:With the help of simple random sampling, 163 subjects (74 speech and language pathologists, and 89 occupational therapists) were selected from rehabilitation experts employed across educational clinics affiliated to the Tehran University of Medical Sciences. The Islamic religiosity scale, faith at work scale, spirituality and spiritual care rating scale, and Dunnett's job satisfaction questionnaire were used to collect the data. Multiple regression and Pearson correlation were applied for data analysis. Results:The findings showed that religious beliefs and faith at work can significantly influence job satisfaction among rehabilitation experts (P<0.05). However, spirituality did not have the same effect (P>0.05).Discussion: These findings showed that religious beliefs are superior to spirituality as far as predictions about job satisfaction were concerned among Iranian rehabilitation experts.