The International Conference “Concrete Sustainability: Materials and Structures – Low Carbon Concrete” (CSMS 2025) was organized by the University of Malta and the International Federation for Structural Concrete fib, with the support of Xjenza Malta and the collaboration of Philip A Tabone and other leading entities. The International Conference was held on the 12th December 2025 at the Aula Magna of the University of Malta Valletta Campus while a Workshop was organised on the 15th December 2025 in the Cittadella in Gozo. CSMS 2025 (Concrete Sustainability: Materials and Structures) is an international conference dedicated to advancing knowledge, innovation, and collaboration in sustainable construction. Bringing together leading researchers, engineers, and industry professionals, the event will highlight the latest developments in both fundamental and applied research on cement-based materials, advanced construction technologies, and sustainable structural design.