| TTX Company TX | Transportation & Warehousing | 0 | — | A |
| TTX Company UT | Transportation & Warehousing | 0 | — | A |
| TTX Company VA | Transportation & Warehousing | 0 | — | F |
| TTX Company WA | Transportation & Warehousing | 0 | — | A |
| TTX Holdings WI | Manufacturing | 0 | — | D |
| Tu-K Industries, Inc. CA | Manufacturing | 0 | — | A |
| Tualatin Hills Park & Recreation Distri OR | — | 0 | — | — |
| Tualatin Valley Fire & Rescue OR | Public Administration | 0 | — | F |
| Tualatin Valley Water District OR | Utilities | 0 | — | F |
| Tuba City Regional Healthcare Corporation AZ | Healthcare & Social Assistance | 0 | — | F |
| Tuba City Unified School District No. 15 AZ | Educational Services | 8 | $57,848 | — |
| Tubbs Enterprises, Inc. CA | Construction | 0 | — | F |
| Tube Art Displays, Inc. OR | Manufacturing | 0 | — | A |
| Tube Art Displays, Inc. WA | Manufacturing | 0 | — | F |
| Tube Fab / Roman Engineering MI | Professional & Technical Services | 0 | — | F |
| Tube Fabrication Industries, Inc. IN | Manufacturing | 0 | — | F |
| Tube Forgings of America,Inc. OR | Manufacturing | 0 | — | F |
| Tube form Solutions, LLC IN | Manufacturing | 0 | — | F |
| Tube Methods, Inc. PA | Manufacturing | 0 | — | F |
| Tube Specialties, Inc. AZ | Manufacturing | 0 | — | A |
| Tube Wright Inc MI | Manufacturing | 0 | — | F |
| TUBE-TAINER CA | Manufacturing | 0 | — | F |
| Tubelite MI | — | 0 | — | — |
| Tubi, Inc. CA | Information & Media | 9 | $215,051 | — |
| Tubis Technology Inc. CA | Manufacturing | 1 | $157,206 | — |
| Tubman Technologies Inc. GA | Professional & Technical Services | 7 | $79,717 | — |
| Tubular Cleaning Service KY | Other Services | 0 | — | A |
| TUBULAR METAL SYSTEMS LLC MI | — | 0 | — | — |
| Tubular Repair CO | — | 0 | — | — |
| Tubular Repair TX | — | 0 | — | — |
| Tubular Steel MO | Wholesale Trade | 0 | — | F |
| Tubular Steel TX | Wholesale Trade | 0 | — | D |
| Tubular Steel Inc CA | Wholesale Trade | 0 | — | A |
| Tubular USA MO | Wholesale Trade | 0 | — | A |
| TUC AZ | Transportation & Warehousing | 0 | — | A |
| TUC PAR AZ | Transportation & Warehousing | 0 | — | F |
| TuCasa, LLC MD | Transportation & Warehousing | 0 | — | F |
| Tucci and Sons, Inc. WA | Construction | 0 | — | F |
| Tuck & Howell Inc. SC | Construction | 0 | — | F |
| Tuck Aire Heating & Air Conditioning Corporation CA | Construction | 0 | — | F |
| Tuck and Howell SC | Construction | 0 | — | F |
| Tucker GA | Retail Trade | 0 | — | B |
| Tucker - Anderson SC | Wholesale Trade | 0 | — | F |
| Tucker - Columbia SC | Wholesale Trade | 0 | — | F |
| Tucker - Fletcher NC | Wholesale Trade | 0 | — | A |
| Tucker - Greenville SC | Wholesale Trade | 0 | — | F |
| Tucker - Spartanburg SC | Wholesale Trade | 0 | — | F |
| Tucker and Associates, PLLC VA | Professional & Technical Services | 1 | $66,560 | — |
| Tucker Anderson SC | Wholesale Trade | 0 | — | F |
| Tucker Building Corporation FL | Construction | 0 | — | F |
