Blunt cardiac injury may result in traumatic ventricular septal defect (VSD) in the pediatric population, but presence of postinfarction VSD with accompanying coronary artery thrombosis has not been reported in the literature thus far. We present a seven-year-old patient who underwent surgery for posttraumatic VSD closure and bypass grafting of thrombotic left anterior descending coronary artery (LAD) occlusion following blunt chest trauma. A high index of suspicion and early use of the appropriate imaging studies are essential for diagnosis and surgical treatment of this condition.