| ThredUp TX | Retail Trade | 0 | — | C |
| thredUP Inc. CA | Retail Trade | 5 | $238,400 | A |
| ThredUp Inc. IL | — | 0 | — | — |
| Three Affiliated Tribes Head Start ND | Educational Services | 28 | $50,400 | — |
| Three Alarm Fire Protection, Inc. CA | Construction | 0 | — | F |
| Three Arch LLC CA | Healthcare & Social Assistance | 1 | $118,893 | — |
| Three Arrows Corporation NY | Manufacturing | 0 | — | A |
| Three Bakers PA | Manufacturing | 0 | — | F |
| THREE BARREL BREWING CO. LLC CO | Manufacturing | 0 | — | A |
| Three Bond International, Inc. CA | — | 0 | — | — |
| Three Brothers Concrete Inc CO | Construction | 0 | — | F |
| Three Brothers Wineries and Estates, LLC NY | Manufacturing | 0 | — | F |
| Three C Body Shops OH | Other Services | 0 | — | D |
| Three Chiefs and No Indians, LLC (American CA | — | 0 | — | — |
| Three Creeks Brewing Company LLC OR | Accommodation & Food Services | 0 | — | A |
| Three Creeks Production LLC OR | Manufacturing | 0 | — | A |
| Three Crosses Regional Hospital, LLC NM | Healthcare & Social Assistance | 1 | $553,280 | F |
| Three Crowns (US) LLP DC | Professional & Technical Services | 1 | $340,000 | — |
| Three Crowns Park IL | Healthcare & Social Assistance | 0 | — | F |
| THREE D ELECTRIC COMPANY CA | Construction | 0 | — | F |
| Three D Metals, Inc. AL | Wholesale Trade | 0 | — | F |
| Three D Metals, Inc. NC | Wholesale Trade | 0 | — | A |
| Three D Metals, Inc. OH | Wholesale Trade | 0 | — | C |
| Three D Plastics, Inc. CA | Manufacturing | 0 | — | A |
| THREE D RIGGING AND CONSTRUCTION INC NY | Construction | 0 | — | A |
| Three D Service Company, Inc. CA | Construction | 0 | — | D |
| Three Daughters LLC GA | Retail Trade | 1 | $148,000 | — |
| Three Dog Bakery MO | Manufacturing | 0 | — | A |
| Three Dog Brands MO | Manufacturing | 0 | — | C |
| Three Dogs and a Cat CA | Accommodation & Food Services | 0 | — | A |
| Three Eighteen on the Avenue NE | — | 0 | — | — |
| Three Floyds Brewpub, LLC IN | — | 0 | — | — |
| Three Floyds Distilling, LLC IN | — | 0 | — | — |
| Three Folds Care Inc AL | Healthcare & Social Assistance | 0 | — | D |
| Three G's Inc. CA | — | 0 | — | — |
| THREE G'S INC. DBA GRIMES HEATING & AIR CONDITIONING FL | Construction | 0 | — | F |
| THREE GUYS GARAGE DBA ROADSTER SHOP IL | Manufacturing | 0 | — | D |
| Three Hands Corp CA | Wholesale Trade | 0 | — | D |
| Three Kings Delivery Inc FL | Transportation & Warehousing | 0 | — | D |
| Three L Inc TX | Wholesale Trade | 0 | — | A |
| Three Lakes Distributing AR | Wholesale Trade | 0 | — | D |
| Three Links MN | Healthcare & Social Assistance | 0 | — | F |
| Three M Tool & Machine, Inc. MI | Manufacturing | 0 | — | A |
| Three Mac Farms, Inc. CA | Agriculture & Forestry | 0 | — | A |
| THREE MAN CORPORATION CA | Manufacturing | 0 | — | A |
| THREE NOTCH ELECTRIC MEMBERSHIP CORPARATION GA | Utilities | 0 | — | F |
| Three Notch'd Brewing Company VA | Accommodation & Food Services | 0 | — | F |
| Three Oaks Contractors, Inc. SC | Construction | 0 | — | F |
| Three Oaks Hospice, Inc. TX | Healthcare & Social Assistance | 0 | — | F |
| THREE PHASE ELECTRIC LLC AZ | Construction | 0 | — | D |
