| W. M. Lyles Co CA | Construction | 0 | — | F |
| W. M. SCHLOSSER CO., INC. MD | Construction | 1 | $126,464 | — |
| W. N. Morehouse Truck Line, Inc. NE | Transportation & Warehousing | 0 | — | A |
| W. P. Carey Inc. (Carey Financial, LLC & retail fundraising business) NY | — | 0 | — | — |
| W. P. Carey Management LLC NY | Real Estate | 1 | $108,000 | — |
| W. Pennings & Sons Inc. MI | Construction | 0 | — | F |
| W. R. Grace & Co.-Conn MI | Manufacturing | 0 | — | B |
| W. REYNEVELD CONSTRUCTION, INC. CA | Construction | 0 | — | F |
| W. S Darley Apparatus WI | Manufacturing | 0 | — | F |
| W. S. Bellows Construction Corporation TX | Construction | 0 | — | A |
| W. S. Newell & Sons, Inc. AL | Construction | 0 | — | C |
| W. S. Townsend Co./DBA MKD Kitchen and Bath MI | Construction | 0 | — | F |
| W. Schiller & Co., Inc. MO | Wholesale Trade | 0 | — | A |
| W. Silver Inc. TX | Manufacturing | 0 | — | F |
| W. Soule and Company MI | Construction | 0 | — | A |
| W. Sternoff LLC WA | Wholesale Trade | 1 | $66,706 | — |
| W. Stuart Smith, Inc. NY | Manufacturing | 0 | — | F |
| W. T. YOUNG STORAGE COMPANY KY | Transportation & Warehousing | 0 | — | A |
| W. W. Enroughty & Son, Inc. VA | Construction | 0 | — | A |
| W. W. Gay Mechanical Contractor, Inc FL | Construction | 0 | — | A |
| W. W. Grainger, Inc. MO | Wholesale Trade | 0 | — | C |
| W. Y. International Inc. WA | Transportation & Warehousing | 1 | $100,000 | — |
| W.A. Bean & Sons, Inc. ME | Retail Trade | 0 | — | D |
| W.A. Foote Memorial Hospital, Inc. MI | Healthcare & Social Assistance | 3 | $166,602 | — |
| W.A. Kendall and Co., LLC GA | Administrative & Waste Services | 0 | — | B |
| W.A. Klinger, L.L.C. IA | Construction | 0 | — | F |
| W.A. RASIC CONSTRUCTION COMPANY, INC. CA | Professional & Technical Services | 1 | $94,994 | — |
| W.A. Richardson Builders, LLC NV | Construction | 0 | — | B |
| W.A. Soefker & Son, Inc. TN | Construction | 0 | — | D |
| W.A. Thompson CA | — | 0 | — | — |
| W.A. Thompson-Barstow CA | — | 0 | — | — |
| W.A. Thompson-Mojave CA | — | 0 | — | — |
| W.B. Guimarin SC | Construction | 0 | — | F |
| W.B. HILL, INC. MA | Other Services | 0 | — | A |
| W.B. Pallets Inc. MI | Manufacturing | 0 | — | F |
| W.B. Starr, Inc. CA | Administrative & Waste Services | 0 | — | F |
| W.C. Bradley Co. GA | Agriculture & Forestry | 0 | — | A |
| W.C. Bradley Co. UT | Wholesale Trade | 0 | — | A |
| W.C. Eshenaur & Son, Inc. PA | Construction | 0 | — | B |
| W.C. Maloney, Inc. CA | Construction | 0 | — | F |
| W.D. Distributing Co. of Oklahoma OK | Other Services | 0 | — | F |
| W.D.Young & Sons, Cocopah Nurseries Inc CA | — | 0 | — | — |
| W.E Salle Sale Co. NY | Manufacturing | 0 | — | A |
| W.E. Imhoff & Co., Inc. dba Intertech Flooring TX | Construction | 0 | — | C |
| W.E. Johnson Equipment Company FL | Other Services | 0 | — | F |
| W.E. LYONS CONSTRUCTION CO. CA | Construction | 0 | — | A |
| W.E. O'Neil Construction Co of Arizona AZ | Construction | 0 | — | A |
| W.E. O'Neil Construction Co. of California CA | Construction | 0 | — | A |
| W.E. O'Neil Construction Co. of NorCal CA | Construction | 0 | — | A |
| W.E. O'Neil Construction Co. of San Diego CA | Construction | 0 | — | A |