Dendrimers referred as the "Polymers of the 21st century" have advanced from a concept to become a new category of polymers with a novel architecture, high loading capacity and versatile chemical structures. The key factors that facilitate steady increase of its application are non-toxicity, multifunctionality, Biodegradability, and nonimmunogenicity of dendrimers. Recent advances have generated avid studies at the frontiers of organic, inorganic, supramolecular and polymer chemistry. This book covers physico-chemical properties, classification, approaches for dendrimer synthesis, characterization, along with their potential applications in areas of research, technology and treatment like dendrimers for targeted drug delivery, gene delivery, printing inks and paints, cosmetics, light harvesting materials, and waste water treatment. This book clearly demonstrates the various applications of dendrimer and indeed substantiates the high hopes for green future.