The handbook comprehensively reviews the therapeutic potential of stem cells and stem cell secretome-based cell-free strategies in regenerative medicine. The chapters in section I and section II respectively discuss the diverse applications of mesenchymal stem cells and non- mesenchymal stem cells, including skeletal myoblasts, endothelial progenitor cells, adipose tissue-derived stem cells, induced pluripotent stem cells, and neuronal stem cells in myocardial repair, inflammatory bowel disease, cognitive deficits, wound healing, retinal disorders, and COVID-19. The subsequent chapters in section IIIprimarily focused on the fast-emerging cell-free therapy approach in regenerative medicine for tissue repair and regeneration.