| Duke Pacific Inc. CA | Construction | 0 | - | F |
| Duke Realty Corporation IN | - | 0 | - | - |
| Duke University NC | Educational Services | 107 | - | C |
| Duke University and Health System NC | Educational Services | 4 | $62,000 | - |
| Duke University Health System NC | Healthcare & Social Assistance | 5 | $122,919 | F |
| Duke University Talent Identification Program NC | - | 0 | - | - |
| Duke’s Malibu CA | - | 0 | - | - |
| Duke's Huntington Beach CA | - | 0 | - | - |
| Duke's La Jolla CA | - | 0 | - | - |
| Duke's Malibu, LLC CA | - | 0 | - | - |
| Duke's Root Control, Inc IL | Administrative & Waste Services | 1 | $120,000 | - |
| Dukes Logistics LLC GA | Transportation & Warehousing | 0 | - | F |
| Dukes Memorial Hospital IN | Healthcare & Social Assistance | 0 | - | F |
| Dulcich, Inc. OR | Wholesale Trade | 4 | $141,250 | D |
| Dulles Engineering, Inc VA | Professional & Technical Services | 3 | $86,833 | - |
| Dulles Geotechnical And Material Testing Services, INC. VA | Professional & Technical Services | 1 | $70,720 | - |
| Dulonos MN | - | 0 | - | - |
| Duluth Broadway LLC (production of Girl from The North Country at The Belasco Theatre) NY | - | 0 | - | - |
| Duluth Dodge MN | Retail Trade | 0 | - | D |
| Duluth Grill 2020 MN | - | 0 | - | - |
| Duluth Hills Youth and Family 2021 MN | - | 0 | - | - |
| Duluth Public Schools ISD709 MN | Educational Services | 0 | - | C |
| Duluth Steel Fabricators 2019 MN | - | 0 | - | - |
| Duluth Trading IA | Transportation & Warehousing | 0 | - | D |
| Duluth Transit Authority MN | Transportation & Warehousing | 0 | - | C |
| DUMAC, Inc. NC | Educational Services | 2 | $110,000 | - |
| Dumas Contracting USA Inc. NY | - | 0 | - | - |
| Dump Guy ME | Administrative & Waste Services | 0 | - | - |
| Dun & Bradstreet AZ | - | 0 | - | - |
| Dun & Bradstreet CA | - | 0 | - | - |
| Dun & Bradstreet, Inc. FL | Information & Media | 4 | $156,489 | - |
| Dun-Par Engineered Form Co. MO | Construction | 0 | - | F |
| Dun-Rite Home Improvements Inc CO | Construction | 0 | - | F |
| Dun-Rite of Wausau, Inc. WI | Construction | 0 | - | F |
| Dunan Precision INC. TX | Wholesale Trade | 1 | $78,352 | - |
| Dunaway Associates, LLC TX | Professional & Technical Services | 1 | $116,485 | - |
| Dunbar Armored, Inc. MD | - | 0 | - | - |
| Dunbar Mechanical Inc. OH | Construction | 0 | - | F |
| Dunbar Strategic Consulting Group, Inc. PA | Healthcare & Social Assistance | 1 | $72,000 | - |
| Dunbarton Corporation AL | Manufacturing | 0 | - | F |
| Duncan Aviation MI | Transportation & Warehousing | 0 | - | A |
| Duncan Aviation NE | Transportation & Warehousing | 0 | - | C |
| Duncan Aviation UT | Transportation & Warehousing | 0 | - | C |
| Duncan Regional Hospital, Inc. OK | Healthcare & Social Assistance | 1 | $66,414 | F |
| Duncaster, Inc. CT | Healthcare & Social Assistance | 0 | - | F |
| Dundee Castings Company MI | Manufacturing | 0 | - | C |
| 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 | - |
| Dunedin Sports Horses LLC PA | Agriculture & Forestry | 1 | $100,464 | - |
