Nanomaterials have transformed structural engineering by offering materials with superior strength, flexibility, and durability at the atomic scale. Their incorporation enhances the mechanical and thermal properties of traditional construction materials. Nanomaterials in Structural Engineering explores the synthesis, characterization, and applications of nanomaterials in concrete, steel, and composites. It discusses the impact of nanoparticles on material behavior, sustainability, and smart infrastructure design. The book includes case studies on nano-reinforced systems used in bridges, buildings, and pavements. Combining scientific principles with engineering practice, it provides insights into how nanotechnology is shaping the future of resilient and sustainable construction.