A portable pneumatic abdominal aortic tourniquet for occlusion of the abdominal descending aorta to restrict blood supply to a non-compressible arterial hemorrhage in the abdominal region. The tourniquet comprising an adjustable waist strap for securing around an abdomen; a directed air bladder mounted to the waist strap having a generally “V” shaped construction operable between a deflated condition wherein the directed air bladder is collapsed, and an inflated condition wherein the directed air bladder is expanded for exerting pressure against the abdomen; and, an air source connected to the directed air bladder for operating the directed air bladder between the deflated condition and the inflated condition.