| Williams Cheese Company MI | Manufacturing | 0 | — | F |
| Williams Cleaners NE | Other Services | 0 | — | D |
| Williams College MA | Educational Services | 5 | $1,330,287 | — |
| Williams Companies MT | Construction | 0 | — | F |
| Williams Companies OK | Administrative & Waste Services | 0 | — | A |
| Williams Company FL | Construction | 0 | — | D |
| Williams Concrete Accessories WA | Wholesale Trade | 0 | — | A |
| Williams Concrete Construction Co., Inc. OH | Construction | 0 | — | A |
| Williams Construction Arkansas Inc. MO | Construction | 0 | — | F |
| Williams Construction Company, INC. VA | Construction | 0 | — | F |
| Williams Construction LLC OK | Construction | 0 | — | A |
| Williams Contracting Co., LLC GA | Construction | 0 | — | F |
| Williams Cos OK | — | 0 | — | — |
| Williams Dental Lab CA | Manufacturing | 0 | — | A |
| Williams Distributing MI | Wholesale Trade | 0 | — | D |
| Williams Distributing OH | Wholesale Trade | 0 | — | A |
| Williams Electric NC | Construction | 0 | — | A |
| Williams Erection Company, Inc. GA | Construction | 0 | — | B |
| Williams Eye Institute IN | Healthcare & Social Assistance | 0 | — | F |
| Williams Fabrication VA | Manufacturing | 0 | — | A |
| Williams Fence of CNY Inc NY | Construction | 0 | — | A |
| Williams Field Services Group LLC CO | — | 0 | — | — |
| WILLIAMS FOOD WORKS AND DISTRIBUTION, LLC. TN | Transportation & Warehousing | 0 | — | A |
| Williams Foods Inc KS | Manufacturing | 0 | — | C |
| Williams Foods Inc OK | Retail Trade | 0 | — | A |
| Williams Form Engineering CA | Manufacturing | 0 | — | F |
| Williams Form Engineering CO | Manufacturing | 0 | — | F |
| Williams Form Engineering GA | Manufacturing | 0 | — | F |
| Williams Form Engineering MI | Management of Companies | 0 | — | A |
| Williams Form Engineering NE | Manufacturing | 0 | — | F |
| Williams Form Engineering PA | Manufacturing | 0 | — | A |
| Williams Form Engineering Corp OR | Manufacturing | 0 | — | F |
| Williams Furnace Company CA | Manufacturing | 0 | — | F |
| Williams Gin and Grain TX | Retail Trade | 0 | — | A |
| Williams Grocery, Inc OK | Retail Trade | 0 | — | B |
| Williams Gun Sight Company MI | Manufacturing | 0 | — | A |
| Williams Inc. AK | — | 0 | — | — |
| Williams Institutional Foods GA | Wholesale Trade | 0 | — | F |
| Williams International Co, LLC UT | Manufacturing | 1 | $86,818 | C |
| Williams International, LLC MI | Manufacturing | 0 | — | C |
| Williams James Group LLC KY | Healthcare & Social Assistance | 0 | — | A |
| Williams Last Mile Home Logistics LLC OH | Transportation & Warehousing | 0 | — | C |
| Williams Lea Corporate Information Solutions NY | — | 0 | — | — |
| Williams Logging Inc. VA | Agriculture & Forestry | 0 | — | A |
| Williams Lumber INC NY | Retail Trade | 0 | — | A |
| Williams Machine & Tool KS | Manufacturing | 0 | — | A |
| Williams Maintenance LLC KY | Construction | 0 | — | F |
| Williams Manufacturing Inc. AL | Manufacturing | 0 | — | D |
| Williams NatonaLease LTD IL | Transportation & Warehousing | 0 | — | C |
| Williams on the Lake inc OH | Accommodation & Food Services | 0 | — | A |