Objective: Fibrous Hamartoma (FH) of childhood is uncommon benign tumor. They are generally seen in the head and neck region, gastrointestinal system and lung. As in the case we report, they may also occur in other unusual sites such as groin and testis. The clinical presentation is almost always a mass or swelling, however our case was admitted to our hospital because of a left testicular atrophy. We report a FH in the testis, which has a rarely location and clinical presentation. Method: A 7-year-old male presented to department of pediatric surgery because of left testicular atrophy. Left orchiectomy was performed. Results: In macroscopic examination, testis dimension was 1.5×1.3×0.4 cm. Its cut surface was smooth and dirtywhite. In microscopic examination, the tumor showed disorganized matur tissue that composed of fibrocollagen stroma, vessels, muscular and adipose tissue. By this findings, it was diagnosed as testicular fibrous hamartoma (TFH). Conclusion: In conclusion, TFH should be always kept in mind with testicular atrophy not only testicular mass or swelling. And knowledge of this particular type lesion is important to distinguish the FH of childhood from other situations in testis such as testicular torsion, incarcerated hernia, malign neoplasm, etc. in order to allow a correct diagnosis and avoid inadequate treatment.