Politics and Business magazines
- The J. Jill Group Inc.
- The J. Jill Group, Inc.
- The J. M. Smucker Company
- The J.M. Smucker Company
- The Jean Coutu Group (PJC) Inc.
- The Jim Henson Company
- The Jim Pattison Group
- The Joffrey Ballet of Chicago
- The John D. and Catherine T. MacArthur Foundation
- The John David Group plc
- The John Nuveen Company
- The Jordan Company LP
- The Judge Group, Inc.
- The Kansai Electric Power Co., Inc.
- The Kansai Electric Power Company, Inc
- The Keith Companies Inc.
- The Kelly-Springfield Tire Company
- The King Arthur Flour Company
- The Knot, Inc.
- The Koll Company