Aneurysms of the gastroduodenal artery are rare. Reported here is the case of a 60-year-old woman suffering from the covered rupturing of a twin aneurysm of the gastroduodenal artery. The patient presented herself in the surgical emergency unit with abdominal discomfort. Diagnostics showed free fluid in the abdominal cavity together with anemia of 9.9 g/dL. A computed tomography scan and an angiography revealed the covered rupturing of a twin aneurysm of the gastroduodenal artery, which was treated by endovascular coiling of the gastroduodenal and pancreaticoduodenal arteries. The patient's hemoglobin level remained stable after treatment, and she was released from the hospital after 18 days. Visceral artery aneurysms are rare. Although endovascular therapy is preferred in cases involving active bleeding, surgery remains the primary therapy in those cases in which bleeding becomes uncontrollable.