Iatrogenic hepatic artery injury during cholecystectomy is a serious complication, often exacerbated by inflammation and anatomical variations of the vascular structures. In this article, a 16-year-old female patient undergoing laparoscopic cholecystectomy for cholecystitis sustained a hepatic artery injury. The cardiovascular surgery team performed an interposition graft using the saphenous vein to restore arterial flow. Systemic heparinization was administered intravenously at a dose of 100 IU/kg before vascular clamping. Hemostasis was achieved through temporary clamping of the celiac trunk branches. Contrast-enhanced computed tomography angiography on postoperative Day 5 confirmed the patency of the graft. In conclusion, in cases where bile duct and hepatic artery injuries occur simultaneously, a multidisciplinary approach is of utmost importance to improve patient outcomes and minimize complications.