This book comprises papers that were presented at the Symposium on Configurational Mechanics, which was held within the framework of the 5th EUROMECH Soil Mechanics Conference, Thessaloniki, 17-22 August 2003. Configurational mechanics concerns any sort of change or "motion" in the material configuration, thus it is a mechanics in the material space. This framework provides a novel and unifying view on otherwise diverse disciplines like fracture mechanics, phase transitions, plasticity and dislocation theory. The articles concern both theoretical and computational mechanics, electroplasticity, magnetoelasticity, elastoplasticity as well as granular, multiphase and micropolar media.