The convergence of biology, engineering, and digital intelligence has ushered in a transformative era for regenerative medicine. At the heart of this revolution lies 3D bio printing, a technology that has evolved from a futuristic concept into a robust scientific discipline capable of fabricating complex, functional living tissues. This edited volume, "Bio printing: Artificial Intelligence, Biomaterials, Cells, and Tissue," serves as a comprehensive roadmap for this interdisciplinary landscape. It is designed to bridge the gap between fundamental research and clinical application by exploring the four critical pillars (Artificial Intelligence, Biomaterials, Cells and Tissue Engineering) that define the modern bio printing workflow.