| Diamond Hill SNF Operations LLC (Guggenheimer) VA | Healthcare & Social Assistance | 0 | — | F |
| Diamond Hospitality LLC PA | Accommodation & Food Services | 0 | — | A |
| Diamond Hospitality, Inc. NM | Accommodation & Food Services | 0 | — | A |
| Diamond Hospitality, LLC KY | Accommodation & Food Services | 0 | — | F |
| Diamond Hotels LLC OK | Accommodation & Food Services | 0 | — | A |
| Diamond Innovations, Inc. OH | Manufacturing | 1 | $180,000 | — |
| DIAMOND INSULATION INC IA | Construction | 0 | — | A |
| Diamond Iron LLC AZ | Construction | 0 | — | F |
| Diamond Jo Worth Casino IA | — | 0 | — | — |
| Diamond K, Inc. PA | Wholesale Trade | 0 | — | A |
| Diamond Landscaping LLC. CA | Administrative & Waste Services | 0 | — | F |
| Diamond Line Delivery ID | Transportation & Warehousing | 0 | — | A |
| Diamond Manufacturing OH | Manufacturing | 0 | — | F |
| Diamond Manufacturing Company IN | Manufacturing | 0 | — | F |
| Diamond Manufacturing Company PA | Manufacturing | 0 | — | F |
| Diamond Materials, LLC DE | Construction | 0 | — | D |
| Diamond Mattress Co. CA | Manufacturing | 0 | — | F |
| Diamond Mechanical, Inc. MA | Construction | 0 | — | A |
| Diamond Metal Fabricators Inc. GA | Manufacturing | 0 | — | A |
| Diamond Metals Distribution LLC OH | Wholesale Trade | 0 | — | A |
| Diamond Mfg. Co. DBA: McKey Perforating Co. WI | Manufacturing | 0 | — | D |
| Diamond Mountain Centers TX | Healthcare & Social Assistance | 0 | — | F |
| Diamond Offshore Auriga Rig LA | — | 0 | — | — |
| Diamond Offshore Drilling Corporate TX | — | 0 | — | — |
| Diamond Offshore Management Company TX | Mining & Extraction | 1 | $210,000 | — |
| Diamond Offshore West Vela Rig LA | — | 0 | — | — |
| Diamond Oil Company IA | Transportation & Warehousing | 0 | — | A |
| Diamond P. Lease & Well Service, Inc. TX | Construction | 0 | — | A |
| diamond pacific tool corp CA | Manufacturing | 0 | — | F |
| Diamond Paper Box Company, dba Diamond Packaging NY | Manufacturing | 0 | — | F |
| DIAMOND PARKING SERVICES LLC CA | Other Services | 0 | — | A |
| DIAMOND PARKING SERVICES LLC HI | Other Services | 0 | — | D |
| DIAMOND PARKING SERVICES LLC UT | Other Services | 0 | — | F |
| Diamond Parking Services LLC WA | Other Services | 0 | — | D |
| Diamond Paymaster LLC dba Diamond Enterprises AK | Other Services | 0 | — | F |
| Diamond Pet Foods CA | Manufacturing | 0 | — | F |
| Diamond Pet Foods MO | Manufacturing | 0 | — | C |
| Diamond Pet Foods SC | Manufacturing | 0 | — | C |
| Diamond Pet Foods - Dumas AR | Manufacturing | 0 | — | A |
| Diamond Pet Foods - Gaston SC | Manufacturing | 0 | — | A |
| Diamond Pet Foods - Ripon CA | Manufacturing | 0 | — | D |
| Diamond Plastics Corporation GA | Manufacturing | 0 | — | F |
| Diamond Plastics Corporation IN | Manufacturing | 0 | — | F |
| Diamond Plastics Corporation LA | Manufacturing | 0 | — | A |
| Diamond Plastics Corporation NE | Manufacturing | 0 | — | F |
| Diamond Plastics Corporation NV | Manufacturing | 0 | — | F |
| Diamond Plastics Corporation TX | Manufacturing | 0 | — | B |
| Diamond Precision WI | Manufacturing | 0 | — | A |
| Diamond Pro AL | Administrative & Waste Services | 0 | — | A |
| Diamond Products Limited ID | Manufacturing | 0 | — | F |
