The chapter is devoted to materials used in controlled fusion facilities. Material solutions for magnetic confinement fusion devices and inertial confinement fusion facilities are described. Fusion materials have to preserve their performance often under extremely harsh conditions characterized by intensive particle fluxes, high levels of neutron irradiation, extreme temperatures, chemically reactive environment and high radiation levels. In the course of the Chapter, the principal fusion material classes: · plasma-facing materials · structural materials · blanket materials · diagnostic materials and · materials for magnets are reviewed. The required functionality, material solutions and an outlook on still open issues is provided for each material class.