This book, "Data Envelopment Analysis: Theory, Methodology, and Application," is a comprehensive reference text that reviews and discusses the basic DEA models, their extensions, and computational aspects. It is the first book to address the practical process of conducting DEA analyses, including the integration of DEA with parametric techniques. The book features a detailed bibliography and fifteen novel applications across various industries, demonstrating the versatility and power of DEA. The content is organized into three main parts: Concepts, Models, and Computation; Novel Applications; and Epilogue: Process and Bibliography. The book originated from a conference held at the University of Texas at Austin in 1989, with the aim of fostering further research and application of DEA. The editors, Abraham Charnes, William W. Cooper, Arie Y. Lewin, and Lawrence M. Seiford, express their dedication to George Kozmetsky and the IC² Institute for their support in making the book a reality.This book, "Data Envelopment Analysis: Theory, Methodology, and Application," is a comprehensive reference text that reviews and discusses the basic DEA models, their extensions, and computational aspects. It is the first book to address the practical process of conducting DEA analyses, including the integration of DEA with parametric techniques. The book features a detailed bibliography and fifteen novel applications across various industries, demonstrating the versatility and power of DEA. The content is organized into three main parts: Concepts, Models, and Computation; Novel Applications; and Epilogue: Process and Bibliography. The book originated from a conference held at the University of Texas at Austin in 1989, with the aim of fostering further research and application of DEA. The editors, Abraham Charnes, William W. Cooper, Arie Y. Lewin, and Lawrence M. Seiford, express their dedication to George Kozmetsky and the IC² Institute for their support in making the book a reality.