Abstract: Disruption of the pelvic ring due to high energy trauma can cause severe bleeding from severed blood vessels, torn ligaments and fractured bone. Active intervention with compression of the injured pelvic bones can reduce the bleeding by a tamponade effect and by stabilizing the tissues. The pelvic fracture immobilizer has a wide band of firm material such as canvas and a plurality of straps, each having a ratcheting buckle. The pelvic fracture immobilizer provides for temporary compression and stabilization of a pelvic ring disruption without the need for the operative insertion of pins into or against the bones. Any trained medical personnel, including a nurse or technician, can use the immobilizer without harm, even in the prehospital setting. A surgeon is not necessarily required for its application. It is much less expensive than an external fixator. It is disposable. Its use does not interfere with subsequent internal fixation surgery.