Textbook in PDF format This book covers the fundamentals and methods of biologically producing nanoparticles using microorganisms such as bacteria, fungi, and algae, along with optimization strategies for microbe-mediated nanoparticle production. It explores industrial and agricultural applications of microbial nanoparticles and their use in healthcare and pharmaceuticals, including treatments for multidrug-resistant infections and cancer. Focusing on microbial nanotechnology, this book highlights its applications in food production, pharmaceuticals production, water treatment, and environmental remediation. It provides valuable insights for researchers and students into food sciences, biotechnology, microbiology, and pharmaceuticals. Additionally, it discusses the environmental applications of microbial nanotechnology, emphasizing recent advancements and future research directions, serving for both academic and industrial researchers as a guide to transformative applications in this field