21st Century Biotechnology examines emerging biotechnological innovations reshaping medicine, agriculture, energy, and environment globally. This forward-looking resource synthesizes CRISPR gene editing, synthetic biology, artificial intelligence applications, and digital biotechnology to show how new technologies are transforming life sciences. The book covers genome editing precision and off-target effects management, synthetic organism design, biofabrication of materials, lab-on-a-chip technologies, and high-throughput screening methods. Topics span personalized medicine development, gene therapy clinical applications, bioprinted tissues and organs, and precision drug manufacturing. Advanced coverage includes AI-driven drug discovery, blockchain for biodata management, and bioinformatics pipelines in research. The book addresses ethical considerations, regulatory evolution across regions, and societal implications of biotechnology advancement. Featuring case studies showcasing 21st-century innovations from global research institutions and biotech companies, this resource serves students, biotech professionals, policymakers, and interested citizens seeking understanding of biotechnology's revolutionary impact on human health, food systems, and sustainable development worldwide.