The 9th International Conference on Very High Cycle Fatigue, VHCF9, will be held in Lisbon in 2024. The conference aims to provide a forum for discussing scientific and technical developments in the field of material fatigue and fracture. The scientific program will be divided into thematic sessions covering various research areas and will include a series of plenary lectures by internationally renowned researchers. The conference seeks to ensure that the research results presented, along with the ensuing discussions, will serve as a reference for future research directions and developments. Additionally, it aims to foster collaboration among researchers, engineers, experts, and students from around the world.