[en] This report is a compilation of contributions of institutes of the Forschungszentrum Karlsruhe and University Karlsruhe to the International Cosmic Ray Conference (ICRC) held in Pune, India this year. These contributions have been made in close collaboration with many national and international universities and institutes. The compilation provides a review of the corresponding scientific activities of the issuing institutes. It also gives an overview of the status and scientific results of the air shower experiments KASCADE-Grande, the Pierre Auger Project, and the new radio antenna array LOPES, which is complemented by a number of articles on related physics subjects such as air shower simulation and direct cosmic ray measurements. (orig.)