An isolated perforation of the duodenum is rare in cases of blunt abdominal trauma, and diagnosis is often delayed due to subtle clinical signs. We present the case of a 13-year-old male patient who presented to the hospital with an alleged history of being run over in the abdomen by a vehicle and a complaint of severe abdominal pain. Radiography of the abdomen in the standing position showed air under the diaphragm, and ultrasonography revealed free fluid in the pelvic and peritoneal cavities, clinching the diagnosis of hollow viscus perforation. The patient was resuscitated and underwent an exploratory laparotomy under general anesthesia. On exploration, no perforation was found in the intraperitoneal organs. The retroperitoneum was opened, and the Cattell-Braasch maneuver was used to approach the duodenum. A single perforation was discovered in the fourth part, and a modified graham patch repair was done. As soon as the patient's bowel sounds returned, a low-fat diet was started through a nasojejunal tube placed distal to the perforation site. The patient was discharged in good condition and is doing well with regular follow-ups. This case emphasizes the need for a high index of suspicion for gut perforation of both intra- and retroperitoneal organs after blunt trauma. This will help in early diagnosis and timely management to reduce perforation-associated mortality. Damage control surgery, with primary closure of the perforation, is well-suited and preferred in an emergency and resource-limited setting.