Congenital cardiac ventricular diverticulum is an extremely rare condition that usually occurs as a part of Pentalogy of Cantrell and frequently associated with sternal, pericardial, diaphragmatic, and thoracoabdominal wall defects. The prognosis of the patient depends on the complexity of abnormalities. Herein, we report biventricular diverticula as a part of incomplete Cantrell’s syndrome in a 1-day-old newborn.