Here we report the features of two cases of ruptured dissected splenic artery aneurysm associated with isolated spontaneous celiac artery dissection encountered in our institute. Case 1: A 52-year-old male was referred to us following diagnosis with acute pancreatitis with pancreatic pseudocyst, dissection of the origin of the celiac artery, and a dissecting pseudoaneurysm of the splenic artery on computed tomography(CT). Endovascular treatment was attempted, but the distal splenic artery was difficult to reach due to high flexion and tortuosity; therefore, proximal embolization alone was performed. Follow-up CT showed incomplete embolization, and radical surgical treatment was subsequently performed. Case 2: A 53-year-old male lost consciousness while driving a passenger car and was injured in a head-on collision with an oncoming car. CT showed dissection from the origin of the celiac artery to the proximal splenic artery and rupture of the splenic artery aneurysm. The celiac artery was narrowed due to median arcuate ligament syndrome. Endovascular treatment was performed, the proximal and distal portions of the false lumen were embolized with coil and cyanoacrylate, and hemostasis was achieved. Follow-up CT revealed a pseudoaneurysm at the splenic hilum, and embolization was performed again. Although, very rare cases, we should consider as one of the differentials diagnoses.