- Hulman and Company1
- I. J. Grass Noodle Company1
- Igleheart Brothers, Incorporated, Evansville, Indiana1
- Interstate Cotton Oil Refining Co.1
- Iowa Dairy Industry Commission1
- J. P. Dieter Company, Chicago, Illinois1
- Jacques Mfg. Co., Chicago, Illinois1
- Jell-O5
- Joan of Arc1
- John Behrmann Inc1
- John F. Jelke Company1
- John Morrell & Co.1
- Joseph Tetley & Co., Inc., New York1
- K. C. Baking Powder1
- K. C. Baking Powder, Chicago, Illinois1
- Kaminski House Museum, http://www.kaminskimuseum.org/161
- Kane & Harcus Co.2
- Kane and Harcus1
- Karo1
- Kellogg Company2