Germany : Private railways & industry : K : Klöckner-Werke Bremen

Germany : Private railways & industry : K : Köln-Frechen-Benzelrather Eisenbahn GmbH

Germany : Private railways & industry : K : Krupp Stahl AG. / Thyssen-Krupp

Germany : Private railways & industry : K : KSE: Kiel-Segeberger Eisenbahn GmbH

Germany : Private railways & industry : K : KSchE: Kiel-Schönberger Eisenbahn GmbH

Germany : Private railways & industry : K : Kassel-Naumburger Eisenbahn AG

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Germany : Private railways & industry : K : KEG: Karsdorfer Eisenbahn-Gesellschaft
Germany : Private railways & industry : K : KVG: Kahlgrundbahn