An autopsy case of ruptured splenic artery aneurysm is reported. A 44 year old woman who had been suffering from liver cirrhosis, was admitted with severe abdominal pain. She died four hours after admission. An autopsy revealed two splenic artery aneurysms within a massive blood clot in the left retroperitoneal space. Cirrhosis of the liver and splenomegaly were also present. An increased blood flow in the splenic artery due to portal hypertension is suggested to be a factor which may have contributed to the formation and rupture of the aneurysm.