The purpose of Fundamentals of Materials Science: Properties, Processing, and Applications is to equip readers with a comprehensive comprehension of the principles that regulate the behaviour of materials. The book explores critical subjects, such as the classification of materials, bonding, crystallography, and atomic theory, including metals, polymers, ceramics, and composites. It also investigates the primary properties that influence material performance, including optical, thermal, electrical, and mechanical. In addition, the text delves into the fundamental processing techniques of casting, forming, and thermal treatment, providing a comprehensive understanding of how materials can be engineered to satisfy specific application requirements. The book emphasises the role of materials science in the advancement of modern technology across a variety of sectors, including electronics, nanotechnology, and energy systems, with a concentration on practical implementations. It is a valuable resource for students, engineers, and professionals who are interested in enhancing their comprehension of the material properties, their processing, and the diverse range of applications that drive technological advancement and innovation.