A 30-year-old male was diagnosed with a disruption of the musculofibrotic abdominal wall as a result of a blunt trauma 3 years after the injury. His traumatic abdominal wall hernia (TAWH) was initially missed on physical examination and computed tomography. The patient presented now with a lump in the left flank after a period of intended weight loss. Laparoscopic repair of the hernia resulted in being asymptomatic ever since. Missing a TAWH might have major consequences, such as incarceration and strangulation. Therefore, it is important to consider a TAWH after blunt abdominal trauma.