Objective: This prospective randomized clinical study was designed to evaluate the efficacy of open cap splint versus split acrylic splint in management of pediatric mandibular fractures. Patients and Methods: Twelve pediatric patients with symphysis, parasymphysis, and body of mandibular fractures treated by closed reduction and fixation were randomly selected. They were divided randomly into two equal groups: group (I) patients were treated by open cap splint and group (II) patients were treated by the split acrylic splint. Postoperative clinical ,and radiographic evaluations were performed to assess complications, occlusal stability, pain on a visual analogue scale (VAS), maximum mouth opening, and the overall results of fixation up to 6 months. Results: Fracture healing was optimal in all cases, except  two cases in group I presented malunion of the fractured bone. Satisfactory dental occlusion was observed in all cases, except two cases in group I, where they had mild to moderate occlusal derangement. Other parameters including maximal mouth opening, and pain level were comparable. Postoperative radiographic evaluation showed a complete union of the fractured segments at the end of six months in all cases. Conclusion:  The results of the current study showed that, the open cap splint and split cap splint provided enough stability for proper bone healing, establishment of optimal occlusion, and early return to normal function with superiority for split cap splint.