An isolated injury of the gallbladder rarely occurs after blunt abdominal trauma and is usually associated with damage to other intra-abdominal organs, which clearly necessitating surgical intervention. Blunt abdominal trauma is often overlooked because there may be no visible signs on the abdominal wall. It is important to closely follow up patients and look for early signs of organ damage as an isolated injury of the gallbladder often follows a vague and insidious clinical course. A combination of special investigations, including a contrast enhanced computed tomographic scan, may be required to confirm the diagnosis of this relatively rare, but serious injury, and if a lesion is suspected, a laparoscopy can be successfully used to confirm the diagnosis and treat this condition without the usual requirement of open exploration. Unfortunately, in our case, a laparoscopy could not be performed due to the patient having undergone previous surgery for early gastric cancer. Herein, the case of a 56-year-old male presenting with an isolated gallbladder injury immediately after violent blunt abdominal trauma, diagnosed on the basis of a computed tomographic scan, which was treated successfully, is reported.