This book serves as a comprehensive and invaluable guide for students, researchers, and professionals interested in understanding the fundamental principles of metallic bonding. It explains the topic by presenting clear illustrations, examples, and case studies. Metallic bonding is an important concept in chemistry, and it forms the basis for understanding the structure, properties, and applications of metals in various industries from materials science and engineering to electronics and beyond. It starts with a solid foundation by exploring the basic principles and theories that govern the bonding between metal atoms. It also covers the relevant atomic structure and electronic configurations of metals to explain the factors affecting the metallic bonds formation. In addition, the crystal structures of the metals and their mechanical and thermal conduction properties are discussed. Additionally, the unique characteristics of metallic bonding in transition metals is covered due to their complex bonding patterns. Finally, the diverse applications of metallic bonding along with future directions in the field are fully discussed.