| KPKodak Polychrome Graphics | Windsor | CO | Printing and Related Support Activities323120 | — | ◇ UNVERIFIED |
| KPKodiak Prestain INC | Golden | CO | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| KJKs Jv LLC | Denver | CO | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| KMKurt Manufacturing Company | Pueblo | CO | Transportation Equipment Manufacturing336310 | — | ◇ UNVERIFIED |
| KIKwal-howells INC ( Dba Kwal Paint Inc) | Denver | CO | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| LCLadder Creek Helium Plant | Cheyenne Wells | CO | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| LWLafarge West INC. | Evergreen | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LWLafarge West, INC. | Pueblo | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LWLafarge West, INC. | Boulder | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LWLafarge West, INC. | Longmont | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LWLafarge West, INC. | Longmont | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LWLafarge West, INC. | Colorado Springs | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LWLafarge West, Inc.- Drennan Concrete Pla | Colorado Springs | CO | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| LWLafarge West, INC. - Howe Pit | Commerce City | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LWLafarge West, Inc.- Minturn Concrete Plt | Minturn | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LWLafarge West, INC. - Steamboat North Pit | Steamboat Springs | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LWLafarge Woody Creek Ready Mix | Woody Creek | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LCLake County | Leadville 4.9 Mi. Sw of | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LSLamar Sw | Lamar | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LGLange Graphics INC | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| LCLawson Construction - 22-906 | Loveland | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LTLayton Truck Equipment CO | Colorado Springs | CO | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| LTLeanin Tree INC | Boulder | CO | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| LCLee's Custom Woodwork | Aurora | CO | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| LPLeiser Painting & Decorating CO INC | Colorado Springs | CO | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| LOLeitner-poma of America INC | Grand Junction | CO | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| LLLightninglabels.com - Lightning Labels | Denver Area | CO | Paper Manufacturing322230 | — | ◇ UNVERIFIED |
| LPLincoln Plating CO | Denver | CO | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| LPLindsay Precast LLC - Dacono | Dacono Area | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| LCLion Const & Paving - Flag Sand & Gravel | Silt Area | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LKL. K. Webber Company, INC | Denver | CO | Miscellaneous Manufacturing339914 | — | ◇ UNVERIFIED |
| LMLockheed Martin - Astronautics Group | Littleton | CO | Transportation Equipment Manufacturing336414 | — | ◇ UNVERIFIED |
| LCLogan Cnty Board of Cnty Commissioners | Sterling | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LRLoveland Ready Mix Concrete - Green Pit | Johnstown | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LMLP Montrose Osb | Olathe | CO | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| LILpnyj INC | Westminster | CO | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| LCLtj Concrete, LLC - Weber Business Park | Dove Creek | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LGLuna Gourmet Coffee & Tea - Coffee Roast | North Washington | CO | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| LWLuxury Wheels O E Plating | Grand Junction | CO | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| MAM. A. Concrete Const- 32.5 Rd Gravel Pit | Grand Junction Area | CO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MBMadeline's Bakery Corp. | Englewood | CO | Food Manufacturing311813 | — | ◇ UNVERIFIED |
| MMMagnum Machine, INC. | Grand Junction | CO | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| MEMail-well Envelope (was American M-w) | Denver | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| MIMam-a, INC | Colorado Springs | CO | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| MPManna Pro Products LLC | Denver | CO | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| MPMarch Press INC | Boulder | CO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| MMMarshall Marine CO | Gunnison | CO | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
 Mars Petcare Us, INC - Pet Food Mfg | Pueblo | CO | Food Manufacturing311111 | — | ◇ UNVERIFIED |
| MMMartin Marietta - Monaghan Materials Fac | Aurora | CO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MMMartin Marietta Mtrls - Batch Plant | Estes Park | CO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
