| SLSpartech LLC - Salisbury | Salisbury | MD | Printing and Related Support Activities323111 | — | ◐ LIKELY ACTIVE |
| TSThe Southern Galvanizing Company | Baltimore | MD | Fabricated Metal Product Manufacturing332812 | — | ◐ LIKELY ACTIVE |
| TUThe United States Gypsum Company - Baltimore Plant | Baltimore | MD | Nonmetallic Mineral Product Manufacturing327390 | — | ◐ LIKELY ACTIVE |
| TDTilley Distribution | Middle River | MD | Chemical Manufacturing325130 | — | ◐ LIKELY ACTIVE |
| TMTriton Metals, INC | Hollywood | MD | Fabricated Metal Product Manufacturing332312 | 20-99 | ▲ REPORTED CLOSED |
| TLTruroots, LLC | Havre De Grace | MD | Food Manufacturing311411 | 20-99 | ◐ LIKELY ACTIVE |
Vac Pac, INC. | Middle River | MD | Paper Manufacturing322121 | — | ◐ LIKELY ACTIVE |
| VPValley Proteins Inc-linkwood Facility | Linkwood | MD | Food Manufacturing311613 | — | ◐ LIKELY ACTIVE |
| VTVibrantz Technologies | Curtis Bay | MD | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| WWWashington Woodworking | Landover | MD | Wood Product Manufacturing321114 | 100-499 | ◐ LIKELY ACTIVE |
| WWaterloo | Jessup | MD | Food Manufacturing311942 | 100-499 | ◐ LIKELY ACTIVE |
| WRW R Grace and CO – Curtis Bay Works | Curtis Bay | MD | Chemical Manufacturing325130 | — | ◐ LIKELY ACTIVE |
| BIBsc Ind | Baltimore | MD | Chemical Manufacturing325320 | — | ◐ LIKELY ACTIVE |
| CCCertainteed CORP | Williamsport | MD | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| FFil-tec | Smithsburg | MD | Textile Mills313000 | — | ◐ LIKELY ACTIVE |
| GSGray & Son, INC. - Finksburg | Finksburg | MD | Petroleum and Coal Products Manufacturing324121 | — | ◐ LIKELY ACTIVE |
| HMHeidelberg Materials US Cement LLC | Union Bridge | MD | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| KWKemira Water Solutions, INC. | Baltimore | MD | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| LBLafarge Building Material INC | Sparrows Point | MD | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| MAMaryland and Virginia Milk, Laurel LLC | Laurel | MD | Food Manufacturing311511 | — | ◐ LIKELY ACTIVE |
| NSNaval Surface Warfare Center | Indian Head | MD | Chemical Manufacturing325920 | — | ◐ LIKELY ACTIVE |
| NSNorthrop-grumman Systems CORP. - Atl | Linthicum | MD | Computer and Electronic Product Manufacturing334413 | — | ◐ LIKELY ACTIVE |
| NGNorthrop Grumman Systems CORP. - Bwi | Linthicum | MD | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| SCS&g Concrete Brooklyn Plant | Baltimore | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◐ LIKELY ACTIVE |
| WGW.l. Gore & Associates- Lovett 1 | Elkton | MD | Apparel Manufacturing315239 | — | ◐ LIKELY ACTIVE |
| XCXerxes CORP | Williamsport | MD | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| ACAai Corporation | Cockeysville | MD | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| ACAcdi (american Computer Development) | Frederick | MD | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| AFAllen Family Foods | Hurlock | MD | Food Manufacturing311615 | — | ◇ UNVERIFIED |
| AWAtlantic Wood Industries | Salisbury | MD | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| BDBlack & Decker | Hampstead | MD | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| BABonsal American INC | White Marsh | MD | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
| CQCapital Quickrete | Clinton | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| COChesapeake Optical Lab | Baltimore | MD | Miscellaneous Manufacturing339115 | — | ◇ UNVERIFIED |
| CBClendenin Brothers | Baltimore | MD | Primary Metal Manufacturing331319 | — | ◇ UNVERIFIED |
Colonial Metals INC - Triumph Industrial Park Bldg 20 | Elkton | MD | Chemical Manufacturing325131 | — | ◇ UNVERIFIED |
| CPConcrete Pipe & Products | Jessup | MD | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| DGDaniel G. Schuster, INC. - Frederick Plant | Frederick | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| EAEastalco Aluminum Company | Baltimore | MD | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| EIEvapco Inc-taneytown | Taneytown | MD | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| GMGaf Materials Corporation | Highlandtown | MD | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
| HSHarford Systems | Aberdeen | MD | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| HFHurlock Feed Mill/hatchery | Hurlock | MD | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| MPMccormick Paint Works CO | Frederick | MD | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| MPMd Precision Spring | Essex | MD | Fabricated Metal Product Manufacturing332611 | — | ◇ UNVERIFIED |
| MVMd Va Marva Maid Landover, LLC | Landover | MD | Food Manufacturing311511 | — | ◇ UNVERIFIED |
| MFMountaire Farms INC Princess Anne Feed Mill | Westover | MD | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| NDNew Dawn Manufacturing CO | Upper Marlboro | MD | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| NCNoxell CORP | Hunt Valley | MD | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| PFPerdue Foods, Llc, Salisbury Processing Plant | Salisbury | MD | Food Manufacturing311119 | — | ◇ UNVERIFIED |