Terra Drive Systems, INC. | Brookston | IN | Machinery Manufacturing333111 | — | ◐ LIKELY ACTIVE |
| TATessy Automation LLC | Meadville | PA | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
The Carpenter Group | San Diego | CA | Fabricated Metal Product Manufacturing332618 | — | ◐ LIKELY ACTIVE |
| TCThe Cleaver-brooks Company, INC. | Thomasville | GA | Fabricated Metal Product Manufacturing332410 | — | ◐ LIKELY ACTIVE |
| TEThe Esab Group, INC. | Hanover | PA | Primary Metal Manufacturing331491 | — | ◐ LIKELY ACTIVE |
| TLThe Lincoln Electric Company | Cleveland | OH | Machinery Manufacturing333991 | — | ◐ LIKELY ACTIVE |
| TEThermal Engineering Corporation | Columbia | SC | Machinery Manufacturing333994 | 20-99 | ◐ LIKELY ACTIVE |
| TKThermo King Corporation | Hastings | NE | Machinery Manufacturing333415 | — | ◐ LIKELY ACTIVE |
| TPThermo Products, LLC. | Denton | NC | Machinery Manufacturing333414 | 20-99 | ◐ LIKELY ACTIVE |
| TWThe Witte Company INC | Washington | NJ | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| TTThumb Tool and Engineering | Bad Axe | MI | Machinery Manufacturing333514 | 100-499 | ◐ LIKELY ACTIVE |
| TITimberpro INC | Shawano | WI | Machinery Manufacturing333120 | 20-99 | ◐ LIKELY ACTIVE |
| TWTitan West | Linn | KS | Machinery Manufacturing333111 | 20-99 | ◐ LIKELY ACTIVE |
| TMTitletown Manufacturing | Green Bay | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
Tools for Bending INC | Denver | CO | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
Topcon Positioning Systems | Fort Atkinson | WI | Machinery Manufacturing333997 | 20-99 | ◐ LIKELY ACTIVE |
| TCToro CO - Shakopee | Shakopee | MN | Machinery Manufacturing333112 | 100-499 | ◐ LIKELY ACTIVE |
| TCTower Components, INC. | Ramseur | NC | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
Trane | Clarksville | TN | Machinery Manufacturing333415 | — | ◐ LIKELY ACTIVE |
| TCTrane Commercial Systems Columbia Coil Center | Columbia | SC | Machinery Manufacturing333415 | — | ◐ LIKELY ACTIVE |
Trane U.s., INC. | Charlotte | NC | Machinery Manufacturing333415 | — | ◐ LIKELY ACTIVE |
| TTTriangle Tool, LLC | Milwaukee | WI | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| TCTri C CO INC | Eureka | IL | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| TATriumph Actuation Systems | Windsor | CT | Machinery Manufacturing333995 | 100-499 | ◐ LIKELY ACTIVE |
| TMTrue Manufacturing INC. | Pacific | MO | Machinery Manufacturing333415 | — | ◐ LIKELY ACTIVE |
| TITrumpf INC | Farmington | CT | Machinery Manufacturing333513 | 500+ | ◐ LIKELY ACTIVE |
| TTTuff Torq Corporation | Morristown | TN | Machinery Manufacturing333613 | 100-499 | ◐ LIKELY ACTIVE |
| TITurbocare INC | Rural Hall | NC | Machinery Manufacturing333611 | — | ◐ LIKELY ACTIVE |
| TCTwin City Fan Cos Brookings | Brookings | SD | Machinery Manufacturing333412 | — | ◐ LIKELY ACTIVE |
| THTwo Harbors Machine Shop | Two Harbors | MN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| UDUlterra Drilling Technologies LP | Fort Worth | TX | Machinery Manufacturing333132 | 100-499 | ◐ LIKELY ACTIVE |
Ultimation Industries LLC | Roseville | MI | Machinery Manufacturing333922 | — | ◐ LIKELY ACTIVE |
| UEUnion Electric Steel Corporation | Valparaiso | IN | Primary Metal Manufacturing331110 | 20-99 | ◐ LIKELY ACTIVE |
| UTUnion Tool CORP the | Warsaw | IN | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| UIUnison Industries LLC | Jacksonville | FL | Machinery Manufacturing333611 | — | ◐ LIKELY ACTIVE |
| UIUniversal Industries | Cedar Falls | IA | Machinery Manufacturing333922 | 20-99 | ◐ LIKELY ACTIVE |
| UAUS Army Tobyhanna Army Depot | Tobyhanna | PA | Paper Manufacturing322122 | — | ◐ LIKELY ACTIVE |
| UBUS Boiler INC | Lancaster | PA | Fabricated Metal Product Manufacturing332410 | 100-499 | ◐ LIKELY ACTIVE |
| UDUS Dod Usaf Dover Afb | Dover | DE | Machinery Manufacturing333120 | — | ◐ LIKELY ACTIVE |
| UDUS Dod Usaf Minot Afb | Minot Afb | ND | Machinery Manufacturing333319 | — | ◐ LIKELY ACTIVE |
| UTUS Tanazawa Corporation | Batavia | OH | Fabricated Metal Product Manufacturing332812 | 1-19 | ◐ LIKELY ACTIVE |
| VMValley Machine Company, INC. | Alexandria | AL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| VVVenco Venturo LLC | Cincinnati | OH | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
Verne INC | San Francisco | CA | Machinery Manufacturing333998 | — | ◐ LIKELY ACTIVE |
Vianh Company, INC. | Garden Grove | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| VMVista Metals INC | Mc Keesport | PA | Machinery Manufacturing333514 | 20-99 | ◐ LIKELY ACTIVE |
| VPVolvo Penta of the Americas Lexington Operations | Lexington | TN | Machinery Manufacturing333618 | — | ◐ LIKELY ACTIVE |
| VMVrc Metal Systems LLC | Box Elder | SD | Machinery Manufacturing333519 | 20-99 | ◐ LIKELY ACTIVE |
| WPWabtec Passenger Transit | Duncan | SC | Machinery Manufacturing333911 | 100-499 | ◐ LIKELY ACTIVE |
| WIWagstaff INC | Hebron | KY | Fabricated Metal Product Manufacturing332410 | 20-99 | ◐ LIKELY ACTIVE |