| Doncasters MA | Manufacturing | 0 | — | F |
| Doncasters Group Ltd AL | Manufacturing | 0 | — | F |
| Doncasters Precision Castings CT | Manufacturing | 0 | — | F |
| Doncasters Trucast SC | Manufacturing | 0 | — | F |
| Doncasters, Inc. CT | Manufacturing | 0 | — | F |
| Donco 3 Construction MO | Construction | 0 | — | C |
| Donco Recycling Supply Co. OH | Manufacturing | 0 | — | F |
| Dondlinger & Sons Construction Co. Inc. KS | Construction | 0 | — | F |
| Done Service Group Inc CO | Construction | 0 | — | F |
| Donegal Construction Corporation PA | Construction | 0 | — | A |
| Donegal Office Solutions, Inc. PA | Construction | 6 | $120,302 | — |
| Dong A-USA Inc TN | Manufacturing | 0 | — | F |
| Dongguk University Los Angeles CA | Educational Services | 7 | $59,378 | — |
| Donghee America Inc AL | Manufacturing | 0 | — | C |
| Dongli Art LLC CA | Professional & Technical Services | 1 | $95,680 | — |
| Dongwon Autopart Technology Alabama LLC AL | Manufacturing | 0 | — | F |
| DONIO TRUCKING COMPANY NJ | Transportation & Warehousing | 0 | — | A |
| Donjon Shipbuilding & Repair LLC. PA | Manufacturing | 0 | — | C |
| Donlad DeMarree Fruit Farm, Inc. NY | Agriculture & Forestry | 0 | — | F |
| Donlar Construction Company MN | Construction | 0 | — | A |
| Donlen, LLC IL | Management of Companies | 0 | — | A |
| Donley Companies NC | Construction | 0 | — | B |
| Donley Companies OH | Construction | 0 | — | A |
| Donley County Gin TX | Agriculture & Forestry | 0 | — | A |
| Donley's Inc. NC | Construction | 0 | — | B |
| Donley's Inc. OH | Construction | 0 | — | C |
| Donna Bella Farms llc. PA | Agriculture & Forestry | 0 | — | F |
| Donna Simpkin, LLC FL | Real Estate | 0 | — | A |
| Donnelley Financial LLC PA | Information & Media | 3 | $145,454 | — |
| Donnelley Financial Solutions (DFIN) NJ | — | 0 | — | — |
| Donnelley Financial Solutions, Inc. NJ | Manufacturing | 0 | — | A |
| Donnelley Financial Solutions, Inc. PA | Manufacturing | 0 | — | D |
| Donnellon McCarthy Enterprises, Inc IL | Wholesale Trade | 0 | — | A |
| Donnellon McCarthy Enterprises, Inc IN | Wholesale Trade | 0 | — | A |
| Donnellon McCarthy Enterprises, Inc OH | Wholesale Trade | 0 | — | A |
| Donnellon McCarthy Enterprises, Inc WV | Wholesale Trade | 0 | — | A |
| Donnelly Concrete, Inc. VA | Construction | 0 | — | C |
| Donnelly GOBM Inc OR | Retail Trade | 0 | — | A |
| Donnelly Industries Inc. NJ | Construction | 0 | — | A |
| Donnelly Mechanical Corp. NY | Construction | 0 | — | B |
| Donnelly Service Group Inc MA | Administrative & Waste Services | 0 | — | F |
| Donnelly-Boland & Associates PA | Professional & Technical Services | 1 | $90,715 | — |
| Donner Plumbing & Heating, Inc. NM | Construction | 0 | — | A |
| Donnewald Distributing IL | Wholesale Trade | 0 | — | D |
| Donobu, Inc. CA | Information & Media | 1 | $164,133 | — |
| Donohoe Construction Company MD | Construction | 0 | — | C |
| Donohoe Hospitality MD | Accommodation & Food Services | 0 | — | F |
| Donohoe Hospitality Services VA | Accommodation & Food Services | 0 | — | A |
| Donohoe Real Estate Services MD | Real Estate | 0 | — | A |
| Donor Alliance, Inc. CO | Healthcare & Social Assistance | 0 | — | D |
