| TGTecomet Gunbarrel Ave | Boulder | — | ◇ UNVERIFIED |
| TAThe Approach L.L.C. | Loveland | — | ◇ UNVERIFIED |
| TBThe Brown Box LLC | Erie | — | ◇ UNVERIFIED |
| TTThermal Tru (deleted From Inventory) | Colorado Springs | — | ◇ UNVERIFIED |
 Thermo Fisher Scientific, INC. | Colorado Springs | — | ◇ UNVERIFIED |
| TSThe Sbj Group INC. | Denver | — | ◇ UNVERIFIED |
| TWThe Walrath Corporation | Lakewood | — | ◇ UNVERIFIED |
| TPThomas Plating CO INC | Englewood | — | ◇ UNVERIFIED |
| TBTitcomb Brothers Manufacturing, INC. | Colorado Springs | — | ◇ UNVERIFIED |
| TMTomken Machine INC. | Buena Vista | — | ◇ UNVERIFIED |
| TITopar, INC. | Trinidad | — | ◇ UNVERIFIED |
| TITribologix Inc | Golden | — | ◇ UNVERIFIED |
| TITrident Investment Group, LLC | Parker | — | ◇ UNVERIFIED |
| T2Tuffy 25733 Road H - Cortez | Cortez | — | ◇ UNVERIFIED |
| UMUnited Machining, INC. | Englewood | — | ◇ UNVERIFIED |
| UMUnited Metal Fabrication INC | Colorado Springs | — | ◇ UNVERIFIED |
| UAUtc Aerospace Systems | Colorado Springs | — | ◇ UNVERIFIED |
| VCValiern Company | Englewood | — | ◇ UNVERIFIED |
| VMVenture Manufacturing Company, INC. | Longmont | — | ◇ UNVERIFIED |
| VSVertical Solutions, INC. | Broomfield | — | ◇ UNVERIFIED |
| VSViking Supply Net | Denver | — | ◇ UNVERIFIED |
| VNVoestalpine Nortrak | Pueblo | — | ◇ UNVERIFIED |
| VCVolition Components LLC | Broomfield | — | ◇ UNVERIFIED |
| VIVoseworks INC. | Northglenn | — | ◇ UNVERIFIED |
| WBWadda Blast LLC | Denver | — | ◇ UNVERIFIED |
| WTWarming Trends, LLC | Englewood | — | ◇ UNVERIFIED |
| WTWarming Trends, LLC | Englewood | — | ◇ UNVERIFIED |
| WSWeatherport Shelter Systems LLC | Olathe | — | ◇ UNVERIFIED |
| WEWeiser Engineering/mile High Precision INC. | Northglenn | — | ◇ UNVERIFIED |
 Western Industrial Contractors | Denver | — | ◇ UNVERIFIED |
| WPWestern Precision Manufacturing LLC | Grand Junction | — | ◇ UNVERIFIED |
| WSWest Side Fabrication LLC | Colorado Springs | — | ◇ UNVERIFIED |
| WSWest Side Fabrication, LLC | Colorado Springs | — | ◇ UNVERIFIED |
| WFW Forge Holdings, INC. | Colorado Springs | — | ◇ UNVERIFIED |
| WGWood Group USA INC - Longmont Facility | Longmont | — | ◇ UNVERIFIED |
| WRW Ray Crabb INC | Denver | — | ◇ UNVERIFIED |
| ZAZybek Advanced Products | Boulder | — | ◇ UNVERIFIED |
