- Jos. Schlitz Brewing Co.1
- Joseph Benn & Sons1
- Joseph Dixon Crucible Company4
- Joseph F. Paul2
- Joseph Horne & Co.1
- Joseph Kern & Co.1
- Joseph Whitcomb & Co.1
- Josiah Cummings & Son1
- Julius Berbecker & Co.2
- Julius Saul1
- Kaiserhof1
- Kalamazoo Corset Company1
- Kalamazoo Vegetable Parchment Co.1
- Kane & Wright1
- Kansas City (Mo.). Board of Public Works1
- Kansas City Bag Manufacturing Co.1
- Keasbey & Mattison Company2
- Keeler's1
- Keeler's Hotel and Annex1
- Keeley Stove Company1
- Keen & De Lang's Stationery and Manufacturing Establishment1
- Keiffer Bros.1
- Kelley & Jones Co.1
- Kelley, Maus & Co.2
- Kendall & Whitney1
- Kennedy Printing Company1
- Kennedy's Celebrated Biscuit1
- Kent Brothers1
- Kerckhoff-Cuzner Mill & Lumber Co.1
- Keuffel & Esser Co.4
- Keystone Publishing Company1
- Kibbe Brothers Co.5
- King Milling Co.1
- Knickerbocker Ice Co.1
- Knickerbocker Paint Co.1
- Knoxville City Mills1
- Konantz & Gaver Co.1
- Krohn, Feiss & Co.1
- Kuhn Netter & Co.2
- L. B. Freeman & Co.1
- L. Barth & Son1
- L. C. Hopkins & Co.1
- L. C. Huck Malting Co.1
- L. Fish Furniture Company1
- L. H. Daloz1
- L. H. Smith Wooden Ware & Co.1
- L. Hatfield1
- L. J. Bensel1
- L. P. Peck1
- L. P. Smith1
- L. S. Learned1
- L. Sprague Company2
- L. W. Carroll & Son1
- L.H. Mace & Co.1
- L.M. Rumsey Mfg. Co.2
- Labsap-Crucknell Woolen Co.1
- Ladd & Coffin1
- Ladwig & Schranck1
- Lake House1
- Lakeside1