Surfaces and Interface Science provides a comprehensive introduction to the science behind surface and interface phenomena. Starting from the concept of an interface as the contact region between an object and its surrounding medium, the book explores how bulk property perturbations create surface characteristics. It integrates principles of physics and chemistry to explain processes such as wetting, nucleation, catalysis, and surface reconstruction, alongside phenomena like surface tension, adhesion, and adsorption. Characterization techniques, including spectroscopy, contact angle, and thermal desorption, are critically examined. Written by experts with decades of experience, this text is ideal for advanced students and researchers seeking a foundational resource with broad applications in biomaterials, microelectronics, and polymer science.