Politics and Business magazines
- Katokichi Company Ltd.
- Katz Communications, Inc.
- Katz Media Group, Inc.
- Kaufhof Holding AG
- Kaufhof Warenhaus AG
- Kaufman and Broad Home Corporation
- Kaufring AG
- Kawai Musical Instruments Manufacturing Co., Ltd.
- Kawasaki Heavy Industries, Ltd
- Kawasaki Heavy Industries, Ltd.
- Kawasaki Steel Corporation
- Kay-Bee Toy Stores
- Kaydon Corporation
- KB Home
- KB Toys
- KB Toys, Inc.
- Keane, Inc.
- Keebler Foods Company
- Keio Teito Electric Railway Company
- Keithley Instruments Inc.