This document summarizes the key contributions of several quality gurus including Deming, Shewhart, Ishikawa, Juran, Imai, Ohno, Shingo, Crosby, Smith, and Pareto. It provides brief biographical information for each guru and highlights their major contributions to quality management philosophies and tools such as statistical process control, Plan-Do-Study-Act cycles, cause-and-effect diagrams, quality circles, Kaizen, Toyota Production System, Six Sigma, and the 80/20 rule. The document also recognizes Indian statistician Mahalanobis and his role in establishing the Indian Statistical Institute.