This volume offers an overview of Chitosans role in facilitating peptide and biomolecule delivery, microbial resistance in wound care, tissue engineering, hemostasis, and drug delivery. It further delves into the challenges and potential applications of chitosan and its chemically modified derivatives within the pharmaceutical industry, with a particular focus on ocular and oral drug delivery, as well as targeted drug delivery systems. Moreover, this volume sheds light on the prominent use of chitosan and its derivatives, whether in their original forms or as membranes, beads, scaffolds, or films, within the domains of tissue engineering, wound healing, and hemostasis. Collectively, this comprehensive exploration aims to enhance our understanding of recent advancements and innovative chitosan-based systems in pharmaceutical and nutraceutical applications, thereby illuminating the myriad possibilities that lie ahead.