We report a case of primary leiomyoma of the temporal bone. An 8-year-old girl was hospitalized with a history of progressive enlargement of mass over right temple. On admission, the patient showed about 30x30mm sized, fixed, hard, and bulging mass over right side temporal region. The overlying skin was normal. Her neurologic examinations and laboratory examinations were unremarkable. Computerized tomography images demonstrated an expansile intradiploic isodense lesion with partially eroded outer table and intact inner table involving the squamous portion of right side temporal bone. Magnetic resonance images showed a relatively homogeneously enhancing well-demarcated lesion with isosignal intensity in T1WI and high signal intensity in T2WI. Total removal of eroded outer table and contained relatively hard mass was performed and surgical defect was repaired with poly methyl methacrylate(Codmann Co. CMV 1G(R)). A histopathological diagnosis was leiomyoma.