Nonoperative management of blunt splenic injury allows preservation of the immune function of the spleen while avoiding unnecessary laparotomy. The aim of our study was to evaluate the feasibility and the results of conservative management of adult blunt splenic trauma in the context of a developing country. Nonoperative management was proposed for 52 out of 62 patients with blunt splenic trauma treated at the Casablanca University Hospital, Morocco. Motor vehicle-road accidents (88%) were the most common etiology. Multiple trauma was present in 79% of the cases. 15% of the cases had hemodynamic instability. Ultrasonography was performed in 52 patients; it showed splenic contusion in 45 patients and subcapsular hematoma in 7 patients. CT scan showed splenic contusion in 11 patients. Four cases ultimately required operative management with one death. Of the remaining 48 patients, 45 had an uneventful course with observation, but there were two deaths in the observation group.