Deming, Juran, Crosby, Peters, and Ishikawa are identified as the top five most influential quality gurus. Deming introduced the 14 points for quality management and emphasized a systems approach. Juran made significant contributions including the quality trilogy and Pareto principle. Crosby defined quality management absolutes like zero defects. Peters focused on customer orientation and attributes of quality revolution. Ishikawa developed the cause-and-effect diagram and emphasized internal customers and total quality control.