| W.E.Bowers & Associates Inc MD | Construction | 0 | - | F |
| W.F. Delauter & Son, Inc. MD | - | 0 | - | - |
| W.G. Cells WA | - | 0 | - | - |
| W.G. Tomko Inc. PA | Construction | 0 | - | B |
| W.G. Yates and Sons Construction Co. MS | Construction | 3 | $80,309 | - |
| W.H. Braum, Inc. OK | Manufacturing | 0 | - | F |
| W.L. French Excavating Corp MA | Construction | 0 | - | D |
| W.L. Gore & Associates Inc. AZ | Wholesale Trade | 1 | $142,692 | - |
| W.L. Gore & Associates Inc. DE | Wholesale Trade | 2 | $132,050 | - |
| W.L. Hickey Sons, Inc. CA | Construction | 1 | $85,176 | - |
| W.L. Roenigk, Inc. PA | Transportation & Warehousing | 0 | - | B |
| W.L.A., Inc. NC | Transportation & Warehousing | 0 | - | D |
| W.M. Rice University TX | Educational Services | 50 | $164,186 | - |
| W.M. Sprinkman WI | - | 0 | - | - |
| W.O. Blackstone & Co., Inc. SC | Construction | 0 | - | F |
| W.R. Case & Sons Cutlery Company PA | Manufacturing | 0 | - | F |
| W.R. Grace & CO. MD | Professional & Technical Services | 4 | $166,236 | A |
| W.R. Meadows Inc IL | Manufacturing | 0 | - | F |
| W.S Darley WI | Manufacturing | 0 | - | B |
| W.S. Badcock Corporation FL | Retail Trade | 0 | - | F |
| W.T. Walker Group WI | Manufacturing | 0 | - | C |
| W.W. Grainger CA | Wholesale Trade | 0 | - | B |
| W.W. Grainger KY | Wholesale Trade | 0 | - | D |
| W.W. Grainger MO | Wholesale Trade | 0 | - | B |
| W.W. Grainger MS | Wholesale Trade | 0 | - | D |
| W.W. Grainger NJ | Wholesale Trade | 0 | - | A |
| W.W. Grainger OH | Wholesale Trade | 0 | - | B |
| W.W. Grainger SC | Wholesale Trade | 0 | - | B |
| W.W. Grainger TX | Wholesale Trade | 0 | - | B |
| W.W. Grainger, Inc. IL | Other Services | 18 | $148,644 | C |
| W/H/I/P Systems, LLC VA | Professional & Technical Services | 7 | $103,029 | - |
| W/K Holding Company, Inc. KS | Manufacturing | 0 | - | D |
| W3eye INC CA | Professional & Technical Services | 2 | $147,140 | - |
| W3global, INC. TX | Professional & Technical Services | 4 | $134,379 | - |
| WA Fan Tuan INC. WA | Transportation & Warehousing | 1 | $74,090 | - |
| Waabi Innovation US Inc. CA | Professional & Technical Services | 5 | $217,800 | - |
| Wabash IN | - | 0 | - | - |
| Wabash Castings LLC IN | Manufacturing | 0 | - | F |
| Wabash Center Inc IN | Healthcare & Social Assistance | 0 | - | F |
| Wabash National Corporation AR | Manufacturing | 0 | - | A |
| Wabash National Corporation CA | Manufacturing | 0 | - | F |
| Wabash National Corporation IN | Manufacturing | 3 | $94,876 | F |
| Wabash National Corporation KY | Manufacturing | 0 | - | F |
| Wabash National Corporation MN | Manufacturing | 0 | - | F |
| Wabash National Corporation PA | Manufacturing | 0 | - | F |
| Wabash National Corporation TX | Manufacturing | 0 | - | F |
| Wabash National Corporation WI | Manufacturing | 0 | - | F |
| Wabash Valley IN | - | 0 | - | - |
| Wabash Valley Produce, INC. IN | Wholesale Trade | 0 | - | C |
| Wabash Valley Service Company IL | Wholesale Trade | 0 | - | B |