Smart and Sustainable Food Packaging Systems provides a systematic and comprehensive overview of emerging food packaging technologies, with an emphasis on innovation, sustainability, and food quality preservation. The book begins by exploring the fundamental principles of modern food packaging, including packaging functions, performance, consumer requirements, and food–package–environment interactions. It further examines the evolution of conventional packaging into intelligent and connected systems, highlighting the applications of smart indicators, advanced sensors, radio-frequency identification (RFID), the Internet of Things (IoT), artificial intelligence (AI), and interactive labelling. The book also covers active packaging, antimicrobial and antioxidant systems, edible films and coatings, bio-based polymers, agro-waste valorization, natural fibre-based packaging, nanotechnology, modified atmosphere packaging, vacuum packaging, aseptic processing, and cold plasma technology. Particular attention is given to the processing and functionalization of natural fibre-based food packaging materials, along with their life cycle assessment, highlighting their potential for sustainable packaging applications. Finally, the book addresses chemical migration, food safety, circular economy principles, life cycle assessment, and future innovations in food packaging. It serves as a valuable resource for researchers, students, academicians, and food industry professionals.