| RMReliance Metal Center | Colorado Springs | — | ◇ UNVERIFIED |
| RLReplicator LLC | Aurora | — | ◇ UNVERIFIED |
| RIRfi Industries INC | Arvada | — | ◇ UNVERIFIED |
| RIRheasilvia Inc. | Denver | — | ◇ UNVERIFIED |
| RPR&J Properties LLC | Silt | — | ◇ UNVERIFIED |
 Rk Mission Critical | Aurora | — | ◇ UNVERIFIED |
| RLRobertson's Landscaping | Colorado Springs | — | ◇ UNVERIFIED |
| RMRocky Mountain Electric Motors | Grand Junction | — | ◇ UNVERIFIED |
| RMRocky Mountain Metal Container | Golden | — | ◇ UNVERIFIED |
| RMRocky Mountain Sandblasting | Henderson | — | ◇ UNVERIFIED |
| RMRocky Mountain Vessels LLC | Montrose | — | ◇ UNVERIFIED |
| RGRon Grob Company | Johnstown | — | ◇ UNVERIFIED |
| RMRSG Metal Works LLC | Denver | — | ◇ UNVERIFIED |
| RSR & S Steel | Denver | — | ◇ UNVERIFIED |
| RWRt Welding INC | Bayfield | — | ◇ UNVERIFIED |
| RLRuth Limited | Highlands Ranch | — | ◇ UNVERIFIED |
| SISal's Industrial Painting | Denver | — | ◇ UNVERIFIED |
| SMSantee Metal Works LLC | Littleton | — | ◇ UNVERIFIED |
| STSa Technology | Loveland | — | ◇ UNVERIFIED |
| SWSelect Windows & Doors | Denver | — | ◇ UNVERIFIED |
| SSSentry Siren, INC. | Canon City | — | ◇ UNVERIFIED |
| SPSeven Peaks, LLC & Bratek Engineering & Manufacturing, Inc. | Denver | — | ◇ UNVERIFIED |
| SFS&F Fluid Power Incorporated dba PIRTEK Colorado Springs | Colorado Springs | — | ◇ UNVERIFIED |
| SMSheffield Metals, International | Denver | — | ◇ UNVERIFIED |
| SFSka Fab Steel, LLC | Durango | — | ◇ UNVERIFIED |
| SASmooth As Glass LTD | Englewood | — | ◇ UNVERIFIED |
| SISomething in the Orange | Colorado Springs | — | ◇ UNVERIFIED |
| SSSopris Steel Construction, Inc. | New Castle | — | ◇ UNVERIFIED |
| SSSpare Skid Plate | Aurora | — | ◇ UNVERIFIED |
| SPSpectrum Paint and Powder Works | Boulder | — | ◇ UNVERIFIED |
| SISpidertrax, Inc. | Loveland | — | ◇ UNVERIFIED |
| SOSpm Oil & Gas - Fort Lupton | Fort Lupton | — | ◇ UNVERIFIED |
 Springs Fabrication - Waynoka | Colorado Springs | — | ◇ UNVERIFIED |
| SCS.S. Connections, LLC | Denver | — | ◇ UNVERIFIED |
| SCSsi Corporation | Julesburg | — | ◇ UNVERIFIED |
| STS-square Tube Products, INC. | Commerce City | — | ◇ UNVERIFIED |
| SEStandard Elements, LLC | Carbondale | — | ◇ UNVERIFIED |
| SGStar Guide Corporation | Arvada | — | ◇ UNVERIFIED |
| SPStar Precision Manufacturing, Inc. | Frederick | — | ◇ UNVERIFIED |
| SISteelcon INC. | Brighton | — | ◇ UNVERIFIED |
| SSSteel Structures America, INC | Berthoud | — | ◇ UNVERIFIED |
| SIStoneco, INC | Trinidad | — | ◇ UNVERIFIED |
| SPStorage Products Group | Aurora | — | ◇ UNVERIFIED |
| SCStructural Coatings, LLC | Denver | — | ◇ UNVERIFIED |
| SPSulfrian Prototype Machining Ltd. | Longmont | — | ◇ UNVERIFIED |
| SPSummit Powder Coatings | Englewood | — | ◇ UNVERIFIED |
| SISurcore INC | Denver | — | ◇ UNVERIFIED |
| TTTag Team Manufacturing | Parker | — | ◇ UNVERIFIED |
| TETanco Engineering INC | Loveland | — | ◇ UNVERIFIED |
| TAT. A. Pelsue Company | Englewood | — | ◇ UNVERIFIED |
