This case report describes a rare complication where ectopic splenic tissue (splenosis) that had grown in the abdomen following a previous spleen removal suddenly ruptured and caused severe internal bleeding. The 35-year-old patient developed acute abdominal pain and underwent emergency surgery to remove the bleeding tissue and stop the hemorrhage. The surgery was successful and the patient recovered well, highlighting the importance of considering splenosis in the differential diagnosis of unexplained abdominal bleeding in patients with prior spleen removal.