The book 'Valorisation of Agri-Food Wastes and By-Products: Recent Trends, Innovations and Sustainability Challenges' offers a comprehensive exploration of the latest advancements and sustainable practices in transforming agricultural and food industry by-products into valuable resources. It delves into innovative techniques for extracting high-value compounds, generating renewable energy, and creating novel materials from what was once considered waste. This insightful volume examines the economic and environmental benefits of waste valorisation, addressing the pressing need for sustainable resource management in the agri-food sector. With contributions from leading experts, it presents cutting-edge research and case studies, making it an invaluable resource for researchers, policymakers, and industry professionals seeking to minimise waste and maximise resource utilisation.