the liaodong peninsula () is a peninsula in southern liaoning province in northeast china, and makes up the southwestern/coastal half of the liaodong region. it is located between the mouths of the daliao river (the historical lower section of the liao river) in the west and the yalu river in the east, and encompasses the territories of the whole sub-provincial city of dalian and parts of prefectural cities of yingkou, anshan and dandong.