| MOMerchants Oil - Merchants Oil - | Denver | CO | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| MSMercury Signs CORP | Denver | CO | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| MGMetro Granite & Marble INC | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMMetro Metal Supply, INC. | Denver | CO | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| MLMhce, LLC | Denver | CO | Textile Product Mills314999 | — | ◇ UNVERIFIED |
| MEMHM Enterprises LLC | Denver | CO | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MRMitchler Rehab Equipment, LLC | Denver | CO | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| MIM.j. International, LLC | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MIMNM Industries LLC | Denver | CO | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| MMMonarch Metal Manufacturing, INC. | Denver | CO | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| MCMoss Copy Center | Denver | CO | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MSMountain States Decals INC. | Denver | CO | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| MSMountain State Stone | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MSMountain Steel & Supply Company | Denver | CO | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| NPNano Pharmaceutical Laboratories, LLC | Denver | CO | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| NRNative Roots | Denver | CO | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| NFNatural Food Works Group LLC | Denver | CO | Food Manufacturing311991 | — | ◇ UNVERIFIED |
| NMNew Man Signs & Truck Lettering | Denver | CO | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| NINotebooks INC | Denver | CO | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| NPNova Packaging, LLC | Denver | CO | Machinery Manufacturing333993 | — | ◇ UNVERIFIED |
| NSNovel Strand Brewing Company LLC | Denver | CO | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| NMNuline Manufacturing Incorporated | Denver | CO | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| OPObenchain Printing CO | Denver | CO | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| OPOcean Pacific Images | Denver | CO | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| OSOld Sole Fabrication INC | Denver | CO | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| OTOn The Cutting Edge Inc. | Denver | CO | Fabricated Metal Product Manufacturing332216 | — | ◇ UNVERIFIED |
| OIOptikem Intl | Denver | CO | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| OOOxy Occidental Petroleum Corporation | Denver | CO | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| PAPacific Award Metals, INC. | Denver | CO | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| PLPactimo LLC | Denver | CO | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
| PLPaletas LLC | Denver | CO | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| PCPeaberry Coffee LTD | Denver | CO | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| PIPease Ind INC | Denver | CO | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| PMPepcol Manufacturing | Denver | CO | Food Manufacturing311611 | — | ▲ REPORTED CLOSED |
| PPPerfectus Printing Co | Denver | CO | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| PPPhoenix Press | Denver | CO | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| PHPinnacle Hardwood, INC | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| PSPinnacle Stoneworks LLC | Denver | CO | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| PPPint's Peak Ice Cream, LLC | Denver | CO | Food Manufacturing311520 | — | ◇ UNVERIFIED |
| PPPint's Peak Ice Cream, LLC | Denver | CO | Food Manufacturing311520 | — | ◇ UNVERIFIED |
| PFPioneer Fixture Co.cn | Denver | CO | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| PLPioneer Label | Denver | CO | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| PPlasticrafts | Denver | CO | Plastics and Rubber Products Manufacturing326130 | — | ◇ UNVERIFIED |
| PPozzolanic | Denver | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| PIPozzolanic Intl | Denver | CO | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| PDPrecision Draperies, LLC | Denver | CO | Textile Product Mills314120 | — | ◇ UNVERIFIED |
| PCPrescient Co., INC. | Denver | CO | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| PBProst Brewing Company | Denver | CO | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| QQickdrain | Denver | CO | Fabricated Metal Product Manufacturing332913 | — | ◇ UNVERIFIED |
| QOQLTY Objective, LLC | Denver | CO | Leather and Allied Product Manufacturing316210 | — | ◇ UNVERIFIED |
