| MPMomentum Printing and Productions, LLC | Baltimore | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MIMonkey in the Metal | Baltimore | MD | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| MPMontgomery Printing Solutions LLC | Rockville | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MWMontgomery Window Products Co. | Frederick | MD | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| MCMoore Communications Services | Thurmont | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MMMorning's Mantra LLC | Baltimore | MD | Food Manufacturing311230 | — | ◇ UNVERIFIED |
| MPMotive Pure, LLC | Monkton | MD | Food Manufacturing311930 | — | ◇ UNVERIFIED |
| MLMr.Bake LLC | Temple Hills | MD | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| MSMRRA Solutions, Inc | Silver Spring | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MBMully's Brewery, LLC | Prince Frederick | MD | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| MKMy King Apparel LLC | Chevy Chase | MD | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| NWNarwhal Water LLC | Joppa | MD | Machinery Manufacturing333318 | — | ◇ UNVERIFIED |
| NINataur INC. | Baltimore | MD | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| NCNational Custom Millwork INC. | Beltsville | MD | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| NGNational Golden Tissue INC. | Hagerstown | MD | Paper Manufacturing322121 | — | ◇ UNVERIFIED |
 National Ink and Stitch LLC | Dunkirk | MD | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
 Nelson Precast Products, LLC | Baltimore | MD | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| Nelson Precast Products, LLC | Towson | MD | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NSNETZER'S SAWMILL, LLC | Oldtown | MD | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| NPNeutron Prods INC | Dickerson | MD | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| NANew Arts Bronze Studios INC | Baltimore | MD | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| NDNext Day Access Central Maryland | Sykesville | MD | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| NBNiagara Bottling, LLC | Baltimore | MD | Beverage and Tobacco Product Manufacturing312112 | — | ◇ UNVERIFIED |
| NKNickolaos Kappatos Enterprises INC. | Elkton | MD | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| NANobody Auto Transport Inc. | Cumberland | MD | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| NANorth American Fence & Supply Company INC | Upper Marlboro | MD | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems CORP | Hanover | MD | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation | Linthicum | MD | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| NGNorthrop Grumman Systems Corporation- Troy Hill 2 (ste 2a) | Elkridge | MD | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| NMNot My Problem LLC | Annapolis | MD | Food Manufacturing311811 | — | ◇ UNVERIFIED |
 Novel Microdevices, INC. | Baltimore | MD | Computer and Electronic Product Manufacturing334510 | — | ◇ UNVERIFIED |
| NLNovores, LLC | Huntingtown | MD | Miscellaneous Manufacturing339930 | — | ◇ UNVERIFIED |
| NINvr, INC. | Thurmont | MD | Wood Product Manufacturing321214 | — | ◇ UNVERIFIED |
| NINvr, INC. | Thurmont | MD | Wood Product Manufacturing321992 | — | ◇ UNVERIFIED |
| OHOak Hill Print & Graphics, LLC | Hagerstown | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| OLOld Line Environmental, INC. | Curtis Bay | MD | Chemical Manufacturing325312 | — | ◇ UNVERIFIED |
| OIOnion Imperial, LLC | Baltimore | MD | Apparel Manufacturing315240 | — | ◇ UNVERIFIED |
| OSOrthocare Solutions, INC. | North Bethesda | MD | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| ODOverhead Door CO of Baltimore | Baltimore | MD | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| OCOwens Corning - Jesup Roofing and Asphalt Plant | Jessup | MD | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
| PSPackaging Services of Maryland, INC. | Williamsport | MD | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| PEPappy's Enterprises, INC. Dba Fresh Dough Company | Woodlawn | MD | Food Manufacturing311822 | — | ◇ UNVERIFIED |
| PIParadigm Intellectual Innovation and Intelligence Solutions, LLC | Clinton | MD | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| PCParagon CNC, LLC | Frederick | MD | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| PDParamount Diagnostics LLC | Essex | MD | Computer and Electronic Product Manufacturing334510 | — | ◇ UNVERIFIED |
| PLPayback LLC | Laurel | MD | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| PHPcs Holdings LLC | Waldorf | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PCPemco Corporation | Baltimore | MD | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| PIPepsico, INC. | Columbia | MD | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| PFPeri Formwork Systems INC. | Elkridge | MD | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
