Fibrous hamartoma (FH) is a focal malformation resembling a neoplasm, composed of an overgrowth of mature cells and tissues that normally occur in the affected area. But they are characterized by disorganization. FHs are usually seen at childhood and located in head and neck region, gastrointestinal system and lung. It is not reported previously in the paratesticular region and in adults. We reported a 47 years-old man with right testicular mass that was diagnosed as paratesticular fibrous hamartoma. In English literature, this is the first case of a fibrous hamartoma originating from paratesticular region in adults. We aim to discuss this case in light of the literature. ©2008, Firat University, Medical Faculty.