Tissue regeneration has evolved from initial stem cell transplantation techniques to the use of bioscaffolds, which support cell–matrix interactions essential for proper tissue growth and differentiation. Bioscaffolds, engineered to mimic the extracellular matrix (ECM) of natural tissues, come in three main types: natural, synthetic, and composite. Natural scaffolds like collagen, fibrin, and chitosan offer biocompatibility and promote cell adhesion, though they may trigger immune responses and possess limited mechanical properties. Synthetic scaffolds, including polylactic acid (PLA) and polycaprolactone (PCL), provide controlled physical properties but may lack bioactivity. Composite scaffolds merge the advantages of both natural and synthetic materials to enhance functionality. Bioscaffolds are pivotal in various applications, including cell culture studies, drug delivery systems, disease modeling, and understanding cell–material interactions. They have revolutionized biomedical research by providing more physiologically relevant environments for cells, enhancing the accuracy of in vitro models, and improving therapeutic outcomes. In medicine, bioscaffolds are integral to tissue engineering, organ regeneration, wound healing, and surgical implants. They enable the development of tissue-engineered skin (TES) for wound healing, bone tissue engineering (BTE) for bone regeneration, and cartilage repair using techniques like matrix-induced autologous chondrocyte repair (MACI) and autologous matrix-induced chondrogenesis (AMIC). Additionally, whole organ decellularization and organoid technologies represent advanced approaches to organ regeneration. However, the clinical translation of bioscaffolds faces challenges related to immunogenicity and host response. The immune system’s reaction to implanted scaffolds can impede their success, necessitating strategies to mitigate immunogenicity, such as effective decellularization, antigen removal, crosslinking, and sterilization. Future directions in bioscaffold research include the incorporation of bioactive molecules, personalized medicine approaches, and nanotechnology. Embedding growth factors, cytokines, and peptides within scaffolds can enhance their regenerative potential. Personalized scaffolds tailored to patient-specific conditions and autologous cell seeding minimize immune rejection and improve healing. Nanotechnology offers innovative solutions to enhance scaffold properties, such as incorporating nanoparticles for targeted drug delivery and surface functionalization for improved cell interactions. Overall, bioscaffolds represent a cornerstone in regenerative medicine, offering diverse applications and promising future advancements to improve clinical outcomes and patient care.