Lecture Notes on MCDM is a comprehensive guide designed for students, researchers, and professionals who want to master Multi-Criteria Decision-Making (MCDM) methods through practical understanding. The book systematically explains 12 powerful decision-making techniques, including AHP, ANP, MAUT, WSM, WPM, Delphi, FMEA & Risk Analysis, EVAMIX, PROMETHEE, and ELECTRE, among others.Each chapter blends conceptual clarity with step-by-step numerical examples, providing readers with a hands-on learning experience. Beyond theory, the book features internship case problems, applied numericals, and real-world case studies that illustrate how MCDM tools can be applied to complex decision scenarios in engineering, environmental management, and organizational planning.Whether used as a classroom companion, self-learning reference, or project handbook, this book bridges the gap between academic learning and practical decision analysis. It empowers readers to confidently apply MCDM methods to evaluate alternatives, optimize outcomes, and make scientifically sound decisions in real-life contexts.