Congenital anterior urethral diverticulum is a rare anomaly in male patients with voiding difficulty. We describe a 14-yr-old boy suffering from post-voiding dribbling. The retrograde urethrogram and cystourethroscopy revealed a congenital anterior urethral diverticulum at the bulbous portion of the urethra. He received a transurethral endoscopic resection of the neck of the diverticulum. After the operation, the patient voided with a good urinary stream with no post-voiding dribbling. We present this case and review the literature.