Gastric diverticulum is a rare entity; the patient usually presents with vague abdominal pain, nausea, vomiting, and weight loss. Diverticulectomy is required for patients with intractable symptoms or complications. We report the laparoscopic excision of a gastric diverticulum in a 15-year-old girl who had been symptomatic for 5 years. A five-port technique and a linear cutting and stapling device were used.