| Duffens Optical CO | Manufacturing | 0 | — | A |
| Duffield Marine Inc. CA | Manufacturing | 0 | — | F |
| Duffin Architectural Solutions TX | Manufacturing | 0 | — | A |
| Dufftown Real Estate II Limited Partnership PA | Construction | 0 | — | A |
| DUFFY AND LEE COMPANY FL | Construction | 0 | — | F |
| Duffy Bro Inc WI | Transportation & Warehousing | 0 | — | A |
| Duffy Bros. Management Co., Inc. MA | Real Estate | 0 | — | F |
| DUFFY CRANE AND HAULING CO | Construction | 0 | — | B |
| Duffy Properties MA | Construction | 0 | — | A |
| Duffy's Ais NY | Other Services | 0 | — | F |
| Duffy's Electric, llc ME | Construction | 0 | — | A |
| DuFour Incorporated dba Central Electric Company CA | Construction | 0 | — | F |
| DuFrane Moving and Storage WI | Transportation & Warehousing | 0 | — | F |
| DUFRESNE SPENCER GROUP, LLC AR | Retail Trade | 0 | — | A |
| DUFRESNE SPENCER GROUP, LLC IL | Retail Trade | 0 | — | C |
| DUFRESNE SPENCER GROUP, LLC IN | Retail Trade | 0 | — | C |
| DUFRESNE SPENCER GROUP, LLC KY | Retail Trade | 0 | — | A |
| DUFRESNE SPENCER GROUP, LLC LA | Retail Trade | 0 | — | C |
| DUFRESNE SPENCER GROUP, LLC MI | Retail Trade | 0 | — | D |
| DUFRESNE SPENCER GROUP, LLC MO | Retail Trade | 0 | — | D |
| DUFRESNE SPENCER GROUP, LLC MS | Retail Trade | 0 | — | A |
| DUFRESNE SPENCER GROUP, LLC NM | Retail Trade | 0 | — | C |
| DUFRESNE SPENCER GROUP, LLC OH | Retail Trade | 0 | — | D |
| DUFRESNE SPENCER GROUP, LLC TN | Retail Trade | 0 | — | B |
| DUFRESNE SPENCER GROUP, LLC TX | Retail Trade | 0 | — | C |
| Dufry America LLC FL | Management of Companies | 0 | — | F |
| Dufry by Avolta NJ | — | 0 | — | — |
| Dufry Cruise Services LLC FL | Management of Companies | 0 | — | F |
| Dugan & Meyers Industrial LLC OH | Construction | 0 | — | A |
| Dugan Production Corp NM | Mining & Extraction | 0 | — | F |
| Dugan Truck Line LLC KS | Transportation & Warehousing | 0 | — | B |
| Dugan Truck Line LLC MO | Transportation & Warehousing | 0 | — | B |
| Dugan Truck Line LLC OK | Transportation & Warehousing | 0 | — | F |
| Dugan Truck Line LLC TX | Transportation & Warehousing | 0 | — | A |
| Duggan & Duggan General Contractor, Inc NY | Construction | 0 | — | A |
| Duggan Contracting MO | Construction | 0 | — | B |
| Duggan Manufacturing LLC MI | Manufacturing | 0 | — | A |
| Duggan Mechanical Services MA | Construction | 0 | — | F |
| Duggan's Trucking Inc. NJ | Transportation & Warehousing | 0 | — | A |
| Dugger Investments Company, Inc. DBA Haven Building Products FL | Retail Trade | 0 | — | A |
| Dugger's Cafe NE | — | 0 | — | — |
| Dugmore & Duncan, Inc. MA | Wholesale Trade | 0 | — | A |
| Duininck Concrete LLC MN | Manufacturing | 0 | — | F |
| Duininck, Inc. MN | Construction | 0 | — | D |
| Duininck, Inc. TX | Construction | 0 | — | A |
| Duit Construction Co., Inc. OK | Construction | 0 | — | F |
| Duit Holdings, Inc. OK | Construction | 0 | — | F |
| Dukane IAS, LLC CT | Manufacturing | 0 | — | A |
| Dukane IAS, LLC GA | Manufacturing | 0 | — | A |
| Dukane IAS, LLC IL | Manufacturing | 0 | — | F |
