| Dunaway Brothers, Inc IL | Construction | 0 | — | A |
| Dunaway Markets Corp WA | Retail Trade | 0 | — | A |
| Dunaway Timber Company KY | Manufacturing | 0 | — | C |
| Dunbar & Brawn Construction ME | Construction | 0 | — | F |
| Dunbar Armored, Inc. MD | — | 0 | — | — |
| Dunbar Carpentry, Inc. IN | Construction | 0 | — | A |
| Dunbar Mechanical Inc. OH | Construction | 0 | — | F |
| Dunbar Security Solutions MD | Administrative & Waste Services | 0 | — | A |
| Dunbar Strategic Consulting Group, Inc. PA | Healthcare & Social Assistance | 1 | $72,000 | — |
| Dunbarton Corporation AL | Manufacturing | 0 | — | F |
| Duncan & Sons' Building Maintenance TN | Administrative & Waste Services | 0 | — | B |
| Duncan Aviation MI | Transportation & Warehousing | 0 | — | A |
| Duncan Aviation NE | Transportation & Warehousing | 0 | — | C |
| Duncan Aviation TX | Transportation & Warehousing | 0 | — | F |
| Duncan Aviation UT | Transportation & Warehousing | 0 | — | C |
| DUNCAN COMPANY MN | Construction | 0 | — | A |
| Duncan Heating & Air Conditioning, Inc. TX | Construction | 0 | — | F |
| Duncan Machine Products, Inc. OK | Manufacturing | 0 | — | D |
| Duncan Regional Hospital, Inc. OK | Healthcare & Social Assistance | 1 | $66,414 | F |
| Duncan Seawall Dock & Boat Lift, LLC FL | Construction | 0 | — | B |
| DUNCANSVILLE OPS LLC PA | Healthcare & Social Assistance | 0 | — | F |
| Duncanville Healthcare & Rehab TX | Healthcare & Social Assistance | 0 | — | A |
| Duncaster, Inc. CT | Healthcare & Social Assistance | 0 | — | F |
| Dundas Jafine Inc. NY | Manufacturing | 0 | — | F |
| Dundee Castings Company MI | Manufacturing | 0 | — | C |
| Dundee Citrus Growers Association FL | Agriculture & Forestry | 0 | — | C |
| DUNDEE GRANITE, LLC NE | Construction | 0 | — | F |
| Dundee Products MI | Manufacturing | 0 | — | F |
| Dundee Resort Development LLC DBA Arapahoe Basin Ski Area CO | Arts & Entertainment | 0 | — | F |
| Dundee Township Park District IL | Public Administration | 0 | — | F |
| Dundy County Hospital NE | Healthcare & Social Assistance | 2 | $53,633 | — |
| Dune Grass Surgical IN | Healthcare & Social Assistance | 0 | — | A |
| Dune Resorts LLC NY | Accommodation & Food Services | 0 | — | F |
| Dunedin Electric FL | Construction | 0 | — | F |
| Dunedin Sports Horses LLC PA | Agriculture & Forestry | 1 | $100,464 | — |
| Dunfield Townhomes MD | Real Estate | 0 | — | A |
| Dungarvin Indiana, LLC. IN | Healthcare & Social Assistance | 0 | — | A |
| Dungarvin Minnesota, LLC. MN | Healthcare & Social Assistance | 0 | — | F |
| Dungarvin New Jersey, LLC. NJ | Healthcare & Social Assistance | 0 | — | F |
| Dungarvin Washington Supported Living, LLC. WA | Healthcare & Social Assistance | 0 | — | F |
| Dungarvin Wisconsin, LLC. WI | Healthcare & Social Assistance | 0 | — | F |
| Dunham Bush USA FL | Manufacturing | 1 | $165,000 | — |
| Dunham Cellars LLC WA | Manufacturing | 0 | — | F |
| Dunham Price Group, LLC LA | Construction | 0 | — | A |
| Dunham Price Industrial LA | Manufacturing | 0 | — | A |
| Dunham Products OH | Manufacturing | 0 | — | A |
| Dunham's Bar MN | — | 0 | — | — |
| Dunham-Bush USA,LLC FL | Manufacturing | 0 | — | C |
| Dunhill Development and Construction TX | Construction | 0 | — | A |
| Dunkerton Cooperative IA | Wholesale Trade | 0 | — | A |
