This study examine the effect of organization commitment, professional commitment, task complexity and locus of control to job satisfaction auditor. Respondents in this study are auditors who worked public accounting firm at Pekanbaru, Padang and Batam. Population is auditor working at Public Accounting Firm at Pekanbaru, Padang, and Batam. The number of auditors who become the sample is 65 auditors from 13 Public Accounting Firm. The method of determining the sample used is purposive sampling, while the data processing method used is multiple regression analysis (multiple regression analysis) using SPSS software version 24.00 to process the data. The result shows that the organization commitment, professional commitment, task complexity and locus of control give effect to job satisfaction auditor.Keyword : organization commitment, professional commitment, task complexity, locus of control and job satisfaction auditor.