Hydrogen evolution and permeation are encountered during electroplating, corrosion, and cathodic protection. Hydrogen accumulates in areas of high stress and may reach a critical concentration, potentially causing fractures and catastrophic damage. Hydrogen Embrittlement Theory and Prevention of Hydrogen Damage in Metals and Alloys explores the theory of hydrogen permeation in metals and alloys, hydrogen embrittlement, stress corrosion cracking, and passivity materials selection as well as electrochemical and non-electrochemical methods for prevention of hydrogen-induced damage. Our goal is to help the next generation of engineers and scientists (i) understand the theory of hydrogen embrittlement and stress corrosion cracking as wells as hydrogen damage prevention strategies, (ii) design models for developing hydrogen damage-resistant alloys, and (iii) prevent damage of different industrial components due to the presence and localization of hydrogen in metals. To accomplish these objectives, the book offers case studies of hydrogen permeation, hydrogen embrittlement, mechanical properties of alloys, hydrogen damage control, and solved problems (with solutions) for the topics covered in the book. The book is self-containing and targets also senior graduate university corrosion engineering courses. The senior undergraduate students have the necessary mathematical exposure and ability to follow the subject. The book is useful for undergraduate corrosion courses taught in chemical, electrochemical, mechanical engineering, chemistry, metallurgy, and material science and will serve as references for individual study.