| DWDavis Wire Pueblo CORP. | Pueblo | CO | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| DFDawn Foods Products | Denver | CO | Food Manufacturing311822 | — | ◇ UNVERIFIED |
| DPDean Pickle & Speciality Products CO | La Junta | CO | Food Manufacturing311421 | — | ◇ UNVERIFIED |
| DHDefiance Hardwoods LLC | Lakewood | CO | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| DCDelta County | Delta Area | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| DBDenver Bumper Works INC | Denver | CO | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| DCDenver Coca-cola Bottling CO | Denver | CO | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| DWDenver Water Department | Henderson | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DWDenver Water - Westside | Denver | CO | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| DMDesigner Marble Dba Benray Designer Marb | Lakewood | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| DFDesign Fabricators INC | Boulder | CO | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| DFDesign Fabricators INC. | Lafayette | CO | Furniture and Related Product Manufacturing337211 | — | ◇ UNVERIFIED |
| DFDesign Fabricators, INC. | Thornton | CO | Furniture and Related Product Manufacturing337211 | — | ◇ UNVERIFIED |
| DGDigital Globe Westminster Campus | Westminster | CO | Computer and Electronic Product Manufacturing334000 | — | ◇ UNVERIFIED |
| DGDi Graphics | Wheat Ridge | CO | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| DGDilley Graphics INC | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| DMDilleys Mobile Premix | Brush | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DIDip in Strip | Denver | CO | Furniture and Related Product Manufacturing337121 | — | ◇ UNVERIFIED |
| DCDirect Checks Unlimited, INC. | Colorado Springs | CO | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| DPDirect Press | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| DPD&k Printing - 5637 Arapahoe | Boulder | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| DRDorn Ready Mix | Fort Morgan | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| DJDow Jones & CO INC | Englewood | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| DEDragon Esp | Lamar | CO | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
 Drake Williams Steel | Aurora | CO | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| DRDun Rite Home Improvements INC | Englewood | CO | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| EME3 Manufacturing LLC | Littleton | CO | Machinery Manufacturing333517 | — | ◇ UNVERIFIED |
| EGEagle Granite Unlimited | Minturn | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| ESEaglespan Steel Structures | Fort Collins | CO | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| EVEagle Valley Millwork CORP. | Montrose | CO | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| EBEarthgrains Baking CO - Holsum Bakery | Grand Junction | CO | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| EBEast Baltimore Bakery of Denver | Denver | CO | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| EPEastwood Printing & Publishing CO | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| EAEaton Aviation Corporation | Aurora | CO | Fabricated Metal Product Manufacturing332919 | — | ◇ UNVERIFIED |
| EMEaton Metal Products CO | Denver | CO | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| EPEcogen Processing Campus | Delta | CO | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| EPEgan Printing CO | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| ECElam Clear Creek Batch Plant | Idaho Springs | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ECElam Const INC V355 Asphalt Plt | Grand Junction | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ECElam Const INC V455 Asphalt Plt | Montrose Area | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ECElam Const - Portable Screen Plant | Grand Junction | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ECElam Construction Inc-craig Hma Plt | Craig | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ETElastomer Technology INC | Boulder | CO | Plastics and Rubber Products Manufacturing326211 | — | ◇ UNVERIFIED |
| EPElder Pens, LLC | Longmont | CO | Furniture and Related Product Manufacturing337212 | — | ◇ UNVERIFIED |
| ELE & L Distribution LLC | Boulder | CO | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| ESEldorado Stone (prev. Stonecraft) | Pueblo | CO | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| EIElectrasteel INC | Boulder | CO | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| EPElectric Power Equipment Company | Denver | CO | Electrical Equipment, Appliance & Component Manufacturing335313 | — | ◇ UNVERIFIED |
| ELElectron Littleton | Littleton | CO | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| EPEmpire Pd1 | Denver | CO | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
