| Thunderbird, LLC NC | Manufacturing | 0 | — | B |
| Thunderbolt Software LLC NJ | Transportation & Warehousing | 0 | — | D |
| ThunderJet Boats WA | Manufacturing | 0 | — | D |
| Thunderline Z NH | Manufacturing | 0 | — | F |
| Thundermist Health Center RI | Healthcare & Social Assistance | 1 | $175,700 | — |
| Thundersoft America Corporation MI | Professional & Technical Services | 1 | $145,600 | — |
| Thunderstealers LLC MA | Transportation & Warehousing | 0 | — | F |
| ThunderWorks NC | Transportation & Warehousing | 0 | — | A |
| Thunes Financial Services LLC CA | Finance & Insurance | 2 | $163,952 | — |
| Thunkable, Inc. CA | Professional & Technical Services | 2 | $104,967 | — |
| Thurgood Excavating, Inc UT | Construction | 0 | — | F |
| Thuro Metal Products, Inc. NY | Manufacturing | 0 | — | F |
| Thursday Pools, LLC IN | Manufacturing | 0 | — | D |
| Thurston Manufacturing NE | — | 0 | — | — |
| Thurston Woods Village MI | Healthcare & Social Assistance | 0 | — | F |
| Thwing-Albert Instrument Company NJ | Manufacturing | 0 | — | F |
| Thybar OH | Manufacturing | 0 | — | D |
| Thybar Corporation KY | Manufacturing | 0 | — | F |
| Thybar Corporation NV | Manufacturing | 0 | — | F |
| Thybar Corporation TX | Manufacturing | 0 | — | A |
| Thymly Products, Inc. MD | Manufacturing | 0 | — | C |
| Thysse WI | Manufacturing | 0 | — | A |
| Thyssen Krupp Presta IN | Manufacturing | 0 | — | C |
| thyssenkrkupp IL | Manufacturing | 0 | — | B |
| thyssenkrupp IN | Manufacturing | 0 | — | B |
| Thyssenkrupp KY | — | 0 | — | — |
| ThyssenKrupp NJ | — | 0 | — | — |
| ThyssenKrupp TN | — | 0 | — | — |
| ThyssenKrupp Access Corporation MO | — | 0 | — | — |
| thyssenkrupp Aerospace IN | Transportation & Warehousing | 0 | — | A |
| thyssenkrupp Aerospace KS | Wholesale Trade | 0 | — | A |
| thyssenkrupp Aerospace WA | Wholesale Trade | 0 | — | A |
| thyssenkrupp Aerospace NA CA | — | 0 | — | — |
| Thyssenkrupp Automotive Systems of North America TN | Manufacturing | 0 | — | A |
| thyssenkrupp Bilstein CA | Manufacturing | 0 | — | F |
| thyssenkrupp Bilstein of America OH | Manufacturing | 0 | — | A |
| thyssenkrupp Crankshaft Company, LLC IL | Manufacturing | 2 | $62,535 | F |
| Thyssenkrupp Crankshaft Danville Forge IL | Manufacturing | 0 | — | F |
| Thyssenkrupp Crankshaft Veedersburg Forge IN | Manufacturing | 0 | — | F |
| Thyssenkrupp Elevator Co. MS | — | 0 | — | — |
| Thyssenkrupp Industrial Services NA, Inc. CA | — | 0 | — | — |
| ThyssenKrupp Materials NA, Inc TN | Professional & Technical Services | 0 | — | F |
| ThyssenKrupp Materials NA, Inc. AL | Wholesale Trade | 0 | — | A |
| thyssenkrupp Materials NA, Inc. AZ | Transportation & Warehousing | 0 | — | A |
| thyssenkrupp Materials NA, Inc. CA | Wholesale Trade | 0 | — | D |
| ThyssenKrupp Materials NA, Inc. CT | Wholesale Trade | 0 | — | A |
| ThyssenKrupp Materials NA, Inc. FL | Transportation & Warehousing | 0 | — | F |
| ThyssenKrupp Materials NA, Inc. GA | Wholesale Trade | 0 | — | C |
| thyssenkrupp Materials NA, Inc. IL | Wholesale Trade | 0 | — | A |
| thyssenkrupp Materials NA, Inc. IN | Wholesale Trade | 0 | — | D |
