Splenic artery aneurysm (SAA) is the most common aneurysm of visceral vessels. Usually the rupture occurs into the free peritoneal cavity and causes massive bleeding, much less frequently the rupture happens into the lumen of the gastrointestinal tract. We describe the case of a 39-year-old male patient with a spontaneous rupture of a splenic artery aneurysm and an acute massive peritoneal bleeding. The case described confirms the rupture of SAA is always a dramatic event and an emergency laparotomy is a life-saving procedure.