The 12th International Conference on Sustainable Solid Waste Management, Paphos, Cyprus, 25 – 28 June 2025, aims to address the significant issue of sustainable solid waste management through the promotion of safe practices and effective technologies, including anaerobic digestion and waste-to-energy. The Conference focuses mainly on modern solid waste technologies. It aims to stimulate the interest of scientists and citizens and inform them about the latest developments in the field of municipal solid waste management.