Selected activities of the Materials Research Department at Risø National Laboratory during 2000 are described. The scientific work is presented in three chapters: Materials Science, Materials Engineering and Materials Technology. A survey is given ofthe Department's industrial collaboration, educational activities and academic activities, such as collaboration with other research institutions, committee work and a list of publications. Furthermore, the main figures outlining the funding andexpenditures of the Department are given. Lists of staff members and visiting scientists are included.