This topical volume on Advanced Diffusion Processes and Phenomena addresses diffusion in a wider sense of not only mass diffusion but also heat diffusion in fluids and solids. Both diffusion phenomena play an important role in the characterization of engineering materials and corresponding structures. Understanding these different transport phenomena at many levels, from atomistic to macro, has therefore long attracted the attention of many researchers in materials science and engineering and related disciplines. The present topical volume captures a representative cross-section of some of the recent advances in the area of mass and heat transport. Reflecting the enormous breadth of the area, the range of topics covered is accordingly very large. Keyword: diffusion, mass diffusion, heat diffusion This volume focuses on the topic of advanced diffusion processes and phenomena, including diffusion in general and mass diffusion and heat diffusion in fluids and solids. The 26 articles cover classical mass diffusion problems like phase transformations, precipitation, recrystallization, and grain boundary diffusion; advanced materials like nanomaterials and ceramic and polymer-based composites; and heat diffusion topics like thermal properties of foams and composite materials, heat storage coefficients of building materials, and fluid flow of impinging jets. Contributors are engineers, physicists, and other scientists from around the world. -- Atomic and molecular physics-- Materials science-- Physics-- Thermodynamics.