| MKMaple Key LLC | Portland | OR | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| MKMaple Key LLC | Portland | OR | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| MGMarble & Granite Remnants & Restoration LLC | Portland | OR | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MIMarc Ii INC | Portland | OR | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| MIMarco Industries INC | Portland | OR | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| MPMariner Productions LLC | Portland | OR | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| MRMario Ruiz | Portland | OR | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| MAMark Abolofia | Portland | OR | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| MHMascotte Home Security Products INC | Portland | OR | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| MBMathews Bakery Inc | Portland | ME | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| MMMatthews Marine Systems INC | Portland | OR | Computer and Electronic Product Manufacturing334519 | — | ◇ UNVERIFIED |
| MMMckenna Metal LLC | Portland | OR | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| MSMcTavish Shortbread | Portland | OR | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| MSMcTavish Shortbread LLC | Portland | OR | Food Manufacturing311821 | — | ◇ UNVERIFIED |
| MMMeeks Metal Works INC | Portland | OR | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| MCMegasonics Corporation | Portland | OR | Computer and Electronic Product Manufacturing334519 | — | ◇ UNVERIFIED |
| MMMeiers Modern Metals, LLC | Portland | OR | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| MSMei Sum Bakery INC | Portland | OR | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| MMMelissa M Riley | Portland | OR | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| MSMe Stream Seafood | Portland | ME | Food Manufacturing311712 | — | ◇ UNVERIFIED |
| MFMetalcraft Fabrication INC | Portland | OR | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| MEMetal Enterprises, INC. | Portland | OR | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| MPMetal Polishing By Timothy INC | Portland | OR | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| MQMetal Quest INC | Portland | TN | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| MUMetso USA INC | Portland | OR | Fabricated Metal Product Manufacturing332919 | — | ◇ UNVERIFIED |
| MFM.f. Foley Co., INC. | Portland | ME | Food Manufacturing311712 | — | ◇ UNVERIFIED |
| MSMichael Smith LLC | Portland | OR | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| MTMichael Todd Mcmurray | Portland | OR | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| MTMichael T Roelle & Kathleen L Roelle | Portland | OR | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MGMickelberry Gardens, Inc. | Portland | OR | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| MCMilestone Contractors | Portland | IN | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MCMilestone Contractors LP | Portland | IN | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MPMiller Paint CO INC | Portland | OR | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| MYMind Your Manna, LLC | Portland | OR | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| MIMiratron INC | Portland | OR | Computer and Electronic Product Manufacturing334290 | — | ◇ UNVERIFIED |
| MSMixer Sheet Metal INC | Portland | OR | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| MTMk Tooling INC | Portland | OR | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| MCMn'm Cabinet CO | Portland | OR | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| MDModern Denture Clinic INC | Portland | OR | Miscellaneous Manufacturing339116 | — | ◇ UNVERIFIED |
| MGMondelez Global LLC | Portland | OR | Food Manufacturing311919 | — | ◇ UNVERIFIED |
| MGMoso Graphics LLC | Portland | OR | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| MSMudshark Studios LLC | Portland | OR | Nonmetallic Mineral Product Manufacturing327112 | — | ◇ UNVERIFIED |
| MBMutantis Brewery & Bottle Shop LLC | Portland | OR | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| NSNaam Som LLC | Portland | OR | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| NDNeon Distributors INC | Portland | OR | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| NCNew Cascadia Traditional LLC | Portland | OR | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| NPNewcastle Precast LLC | Portland | OR | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| NDNew Destiny Holdings Corporation | Portland | OR | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| NENew England Fiberglass Company, INC. | Portland | ME | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| NONew Oregon Machine INC | Portland | OR | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
