Politics and Business magazines
- John Fairfax Holdings Limited
- John Frieda Professional Hair Care Inc.
- John H. Harland Company
- John Hancock Financial Services, Inc.
- John Hancock Mutual Life Insurance Company
- John Menzies plc
- John Paul Mitchell Systems
- John Q. Hammons Hotels, Inc.
- John W. Danforth Company
- Johns Manville Corporation
- Johnson & Higgins
- Johnson Outdoors Inc.
- Johnson Worldwide Associates, Inc.
- Johnsonville Sausage L.L.C
- Johnston Industries, Inc.
- Johnston Press plc
- Johnstown America Industries, Inc.
- Jones Intercable, Inc.
- Jones Lang LaSalle Incorporated
- Jones Medical Industries, Inc.