This book, “Sustainable Green Nanomaterials for Advanced Applications,“ aims to provide a comprehensive overview of the principles, synthesis methods, characterization techniques, and diverse applications of green nanomaterials. The growing concerns regarding environmental degradation, resource depletion, and the adverse effects of conventional chemical processes have accelerated the search for sustainable alternatives. Green nanotechnology addresses these concerns by integrating the principles of green chemistry with nanoscience, thereby promoting safer and more efficient materials for future technologies.