Atresia of the colon represents the least common cause of neonatal intestinal obstruction, comprising less than 10 percent of gastrointestinal atresias. Eleven patients underwent surgical repair of colonic atresia during a 5 year period. Five of the patients were premature. Two had associated gastroschisis and other congenital anomalies were present in three patients. Hypaque enema was utilized to diagnose intestinal atresia and laparotomy was then undertaken. Primary repair could be performed in four patients, one with type I and three with type 3 atresias. These four patients did well and were discharged within 13 days after operation. Three deaths occurred in patients with associated anomalies, yielding a mortality rate of 28 percent. Operative therapy of colonic atresia should be individualized, based on the condition of the patient at presentation and the presence of associated birth defects.