We reported a rare but deadly case of massive spontaneous omental bleeding. This 40 year-old male who did not have any specific past medical history and any known cardiovascular risk factors, presented with decompensated hemorrhagic shock and respiratory failure. After resuscitation, he was successfully managed with emergent laparotomy and partial omentectomy. Pathology revealed focal septic emboli in multiple ruptured omental arteries associated with acute and chronic inflammation. Patients with stable vital signs should receive confirmatory CT scan followed by transarterial embolization if available, whereas patients with unstable vital signs should undergo immediate exploratory laparotomy.