This study aims to analyze the effect of intrinsic motivation on employee performance with organizational commitment as an intervening variable. Information obtained from this research is very important for the organization as a material consideration to improve employee performance. The subjects of this study were employees at the District Office in the western part of Sleman Regency. The sampling technique in this study was a saturated sample. Methods of collecting data using questionnaires which finally obtained as many as 75 respondents. Data analysis using path analysis with the help of SPSS 17.0 program. The results of this study indicate that intrinsic motivation affects employee performance, intrinsic motivation affects organizational commitment, organizational commitment influences employee performance, intrinsic motivation on employee performance is mediated by variable organizational commitment.