Food Microbiology provides a comprehensive and structured exploration of microorganisms associated with foods, emphasizing their roles in food quality, safety, spoilage, and processing. The book begins with fundamental concepts of microbial classification, growth requirements, intrinsic and extrinsic factors affecting microbial behavior, and the ecological interactions that shape food environments. Key foodborne pathogens are examined in detail, including Salmonella, Listeria monocytogenes, E. coli O157:H7, Staphylococcus aureus, Clostridium botulinum, Bacillus cereus, Vibrio species, Norovirus, Hepatitis A, and major parasitic contaminants. Their transmission routes, virulence factors, infectious doses, clinical symptoms, and preventive measures are clearly explained. Mycotoxins and their toxigenic fungi—such as aflatoxins, ochratoxin, fumonisins, and others—are also discussed due to their global significance in food safety. The book further explores microbial ecology, natural microflora of foods, quorum sensing, starter cultures, and biofilm formation. Essential concepts for contamination control, sanitation practices, fermentation processes, spoilage mechanisms, predictive microbiology, and the impact of environmental conditions on microbial growth are presented in a systematic manner. Designed for students, researchers, and professionals in food science, dairy technology, biotechnology, and public health, Food Microbiology serves as a valuable reference for understanding the complex interactions between microorganisms and food systems, enabling readers to strengthen their foundation in both theoretical and applied food microbiology.