Klöckner can be:
Klöckner & Co, German metal handler headquartered in Duisburg Klöckner AG, former steel manufacturer Klöckner Stahl, plant in Bremen Klöckner Pentaplast, one of the world's largest suppliers of films for pharmaceutical use Klöckner Stadium, home to four nationally recognized sports programs Manfred Klöckner, East German slalom canoer