We report a case of splenic hamartoma that was occasionally detected. Ultrasonography performed as a screening examination revealed a hypoechoic splenic lesion. A computed tomography and magnetic resonance examination were performed in order to characterize the lesion but failed to make a final diagnosis. An elective laparoscopic splenectomy with consecutive histologic examination revealed a splenic hamartoma. Splenectomy may be required for definite characterization of this type of splenic lesion.