| AMAdams Mcclure | Denver | CO | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| AMAdams Mcclure - Inca Street | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| AAdplex | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| ALAfgo Laboratories INC | Denver | CO | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Wcr INC | Denver | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Wcr, INC. | Denver | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ADAirgas Denver Asu | Denver | CO | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| AOAlameda Ornamental Iron | Denver | CO | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| ABAlbert's Bullnosing, INC. | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| ATAllied Trades INC Dba Allied Steel CO | Denver | CO | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| AWAmerican Web INC | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| AAnacomp | Denver | CO | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AHApcna Holdings LLC | Denver | CO | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
 Archer Daniels Midland Company | Denver | CO | Food Manufacturing311313 | — | ◇ UNVERIFIED |
 A. R. Wilfley and Sons, INC. | Denver | CO | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| AGAsarco Globe Plant | Denver | CO | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| ASAscent Solar | Denver | CO | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| AGAspen Graphics, INC. | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| AMAtlas Metal & Iron CORP | Denver | CO | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| AMAtlas Metals & Iron CORP | Denver | CO | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| AHAuto Haus of Colorado Dba Trailer Made Custom Trailers LLC | Denver | CO | Transportation Equipment Manufacturing336214 | — | ◇ UNVERIFIED |
| BRBacker Rod Mfg. | Denver | CO | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| BPBarnum Printing + Publishing CO | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| BCBasalite Concrete Products | Denver | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| BIBasf Inmont CORP. | Denver | CO | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| BBB&b Blending INC | Denver | CO | Nonmetallic Mineral Product Manufacturing327213 | — | ◇ UNVERIFIED |
| BWBest Way Printing | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| BRBg Retail - Redfield Rifle Scopes Bldg | Denver | CO | Machinery Manufacturing333310 | — | ◇ UNVERIFIED |
| BLBlaze LLC | Denver | CO | Food Manufacturing311352 | — | ◇ UNVERIFIED |
| BFBlue Flame Services, LLC | Denver | CO | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| BLBpi-westminster, Llc(owner)/arcadis (op) | Denver | CO | Transportation Equipment Manufacturing336411 | — | ◇ UNVERIFIED |
| BRBrannan Ready Mix Company | Denver | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BSBrannan Sand & Gravel | Denver | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CICannontech Industries LTD | Denver | CO | Plastics and Rubber Products Manufacturing326299 | — | ◇ UNVERIFIED |
| CICaraustar Industries INC. | Denver | CO | Paper Manufacturing322212 | — | ◇ UNVERIFIED |
| CICardinal Indl Finishes INC | Denver | CO | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| CICargill, INC. | Denver | CO | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| CCCbd Clinilabs | Denver | CO | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| CFCcod; Fleet Maintenance Facility | Denver | CO | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| CDCentral Denver Iron Works, INC | Denver | CO | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| CGCentury Graphics LTD | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| CBChampion Boxed Beef CO | Denver | CO | Food Manufacturing311611 | — | ◇ UNVERIFIED |
| CSChart Storage Systems - Denver, INC | Denver | CO | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| CSChart Storage Systems - Denver, INC | Denver | CO | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| CMChemical & Metal Industries INC | Denver | CO | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| CCCity & County of Denver - Roslyn | Denver | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CDClassic Doorways | Denver | CO | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| CPC&m Press CORP | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| CFCoffee for a Purpose, INC. | Denver | CO | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| CIColorado Industrial Painting INC | Denver | CO | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
