| Watts Water Technologies NH | Manufacturing | 0 | — | D |
| Watts Water Technologies OH | Transportation & Warehousing | 0 | — | A |
| Watts Water Technologies, Inc. KS | — | 0 | — | — |
| WATTTIME CORPORATION CA | Professional & Technical Services | 1 | $140,000 | — |
| Waubonsee Community College IL | Educational Services | 0 | — | A |
| WAUBONSEE COMMUNITY COLLEGE #516 - C800011 IL | Educational Services | 0 | — | A |
| Waubonsee Development Company IL | Construction | 0 | — | F |
| Waubun-Ogema-White Earth Schools ISD#435 MN | Educational Services | 0 | — | A |
| Wauconda Care IL | Healthcare & Social Assistance | 0 | — | F |
| Wauconda Fire District IL | Public Administration | 0 | — | A |
| Wauconda Park District IL | Arts & Entertainment | 0 | — | B |
| Wauconda Tool & Engineering Inc dba NN Power Solutions Algonquin Plant IL | Manufacturing | 0 | — | F |
| Waudena 90 WI | Wholesale Trade | 0 | — | A |
| Waukee Community School District IA | Educational Services | 1 | $55,825 | — |
| Waukegan Community Unit School District 60 IL | Educational Services | 3 | $87,755 | — |
| Waukegan Park District IL | Public Administration | 0 | — | D |
| Waukegan Roofing Co., Inc. IL | Construction | 0 | — | F |
| Waukegan Steel, LLC IL | Construction | 0 | — | F |
| Waukegan Tire & Supply Co., Inc. IL | Retail Trade | 0 | — | F |
| Waukegan Tire & Supply Co., Inc. WI | Retail Trade | 0 | — | F |
| Waukesha Hospitality, LLC WI | Accommodation & Food Services | 0 | — | F |
| Waukesha Metro Transit WI | Transportation & Warehousing | 0 | — | D |
| Waukesha Prolec GE NC | Manufacturing | 0 | — | C |
| Waukesha Roofing & Sheet Metal, Inc. WI | Construction | 0 | — | F |
| Waukesha Surgical Specialists, S.C. WI | Healthcare & Social Assistance | 1 | $380,000 | — |
| Waukesha Tool & Stamping LLC, dba Waukesha Metal Products WI | Manufacturing | 0 | — | C |
| Waukesha Tool & Stamping, LLC dba Waukesha Metal Products WI | Manufacturing | 0 | — | F |
| Waukesha-CJD Inc WI | Retail Trade | 0 | — | A |
| WAUKESHA-PEARCE INDUSTRIES, LLC TX | Wholesale Trade | 2 | $85,686 | — |
| Waukesha-S Inc WI | Retail Trade | 0 | — | A |
| Waukon Feed Ranch Agronomy Site IA | Agriculture & Forestry | 0 | — | D |
| Waukon Feed Ranch Mill Site IA | Manufacturing | 0 | — | A |
| Waunakee Community School Distric WI | Educational Services | 0 | — | C |
| Waunakee Remodeling WI | Construction | 0 | — | F |
| Waupaca WI | Administrative & Waste Services | 0 | — | A |
| Waupaca Elevator Co Inc WI | — | 0 | — | — |
| Waupaca Foundry INC PA | — | 0 | — | — |
| Waupaca Foundry, Inc. IN | Manufacturing | 0 | — | F |
| Waupaca Foundry, Inc. MI | Manufacturing | 0 | — | F |
| Waupaca Foundry, Inc. TN | Manufacturing | 0 | — | F |
| Waupaca Foundry, Inc. WI | Manufacturing | 0 | — | F |
| Wauregan Fire District - Atwood Hose Fire Company CT | Public Administration | 0 | — | A |
| Wausa Care and Rehabilitation Center NE | — | 0 | — | — |
| Wausau WI | Retail Trade | 0 | — | F |
| Wausau Chemical Corporation WI | Wholesale Trade | 0 | — | A |
| Wausau Coated Products, Inc. WI | Manufacturing | 0 | — | C |
| Wausau Container Corporation WI | Manufacturing | 0 | — | F |
| Wausau Equipment Company WI | Manufacturing | 0 | — | B |
| Wausau Equipment Company, LLC Update WI | — | 0 | — | — |
| Wausau Financial Systems Inc MN | Finance & Insurance | 1 | $132,842 | — |