A portable pneumatic abdominal aortic tourniquet for occlusion of the abdominal descending aorta to restrict blood supply to a non-compressible arterial hemorrhage in or below the inguinal region is presented. The tourniquet includes an adjustable waist strap for securing it around the abdomen of a patient and a windlass rod connected to the waist strap to selectively tighten the strap as needed to tightly secure it to patient. A directed air bladder is mounted to the waist strap having a generally “V” shaped construction and is expanded for exerting directed pressure against the abdomen. Upon inflation of the air bladder and adjustment of the windlass, occlusion or restriction of blood flow through the abdominal descending aorta will occur which will achieve cessation of hemorrhage in or below the inguinal area or achieve other therapeutic effects like elevated blood pressure to enhance CPR or blood flow control to the lower extremities.