We present a case of a 22-year-old female who had suffered from painless gross hematuria and intermittent dysuria since she was 10 years old. A cystoscopic examination revealed a hemangioma occupying most of the dome of the urinary bladder. Surgical treatment with a partial cystectomy and excision of the urinary bladder hemangioma was then performed. The specimen measures about 13×8×6 cm and was sent for pathologic confirmation. The patient recovered smoothly with no complications encountered.