| GMGeneral Motors Truck & Bus Group | Baltimore | MD | Transportation Equipment Manufacturing336110 | — | ◇ UNVERIFIED |
| GSGeo Specialty Chemicals | Baltimore | MD | Chemical Manufacturing325131 | — | ◇ UNVERIFIED |
| GCGoetzes Candy Company | Baltimore | MD | Food Manufacturing311330 | 100-499 | ◇ UNVERIFIED |
| HEHalethorpe Extrusions Incorporated | Baltimore | MD | Primary Metal Manufacturing331318 | — | ◇ UNVERIFIED |
| IPInsl-x Products CORP. | Baltimore | MD | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| LCLebanon Chemical 50 | Baltimore | MD | Chemical Manufacturing325312 | — | ◇ UNVERIFIED |
| LBLegend Brands | Baltimore | MD | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| MRMaryland Recycling | Baltimore | MD | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| MCMpa - Cox Creek | Baltimore | MD | Primary Metal Manufacturing331000 | — | ◇ UNVERIFIED |
| MLMpi Labels of Baltimore, INC | Baltimore | MD | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| OMOpta Minerals | Baltimore | MD | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| OBOtterbein's Bakery, INC. | Baltimore | MD | Food Manufacturing311811 | 20-99 | ◇ UNVERIFIED |
| PCPemco CORP - Yard 56 | Baltimore | MD | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PFP. Flanigan and Sons, INC - Annapolis Rd | Baltimore | MD | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PIPier-sol, INC. | Baltimore | MD | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| PCPq CORP. | Baltimore | MD | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| QAQuad Avenue Chemical & Biofuels Site | Baltimore | MD | Computer and Electronic Product Manufacturing334418 | — | ◇ UNVERIFIED |
| RIRailplan International | Baltimore | MD | Transportation Equipment Manufacturing336510 | 100-499 | ◇ UNVERIFIED |
| RSRed Star Yeast | Baltimore | MD | Food Manufacturing311942 | — | ◇ UNVERIFIED |
| RCReichhold Chem INC. | Baltimore | MD | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| RTRetriev Technologies, INC. | Baltimore | OH | Transportation Equipment Manufacturing336370 | — | ◇ UNVERIFIED |
| RBRockland Bleach & Dye Works | Baltimore | MD | Textile Mills313210 | — | ◇ UNVERIFIED |
| SCSasol Chemicals (usa) LLC | Baltimore | MD | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| SESignode Eastern Operations | Baltimore | MD | Plastics and Rubber Products Manufacturing326112 | — | ◇ UNVERIFIED |
| SISyngene International LTD. | Baltimore | MD | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| TTechalloy | Baltimore | MD | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| TGTexas Gulf Industries, INC. | Baltimore | MD | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| TSThe Sun Products Corporation | Baltimore | MD | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| THTulkoff Horseradish Frod | Baltimore | MD | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| UCUnited Coatings | Baltimore | MD | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| UIUnited Iron & Metal | Baltimore | MD | Primary Metal Manufacturing331419 | — | ◇ UNVERIFIED |
| UPUnited Parcel Service - Quad (mdqua) | Baltimore | MD | Machinery Manufacturing333292 | — | ◇ UNVERIFIED |
| VPValley Proteins, INC. | Baltimore | MD | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| VIValleywood Industries, INC. | Baltimore | MD | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| WAWashington Aluminum | Baltimore | MD | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| WSWorthington Steel Company the | Baltimore | MD | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| AAAd Alco Doors | Baltimore | MD | Wood Product Manufacturing321911 | 20-99 | ◐ LIKELY ACTIVE |
| ASAdrian Steel of MD | Baltimore | MD | Furniture and Related Product Manufacturing337215 | 20-99 | ◐ LIKELY ACTIVE |
 Altium Packaging - Baltimore | Baltimore | MD | Plastics and Rubber Products Manufacturing326160 | 20-99 | ◐ LIKELY ACTIVE |
| ASAmerican Sugar Refining - Baltimore | Baltimore | MD | Food Manufacturing311314 | 500+ | ◐ LIKELY ACTIVE |
| BABad Apple Farms | Baltimore | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BBaltimore | Baltimore | MD | Petroleum and Coal Products Manufacturing324122 | 100-499 | ◐ LIKELY ACTIVE |
| BBBaltimore Biopark | Baltimore | MD | Chemical Manufacturing325412 | 100-499 | ◐ LIKELY ACTIVE |
| BBBaltimore Branch 19 | Baltimore | MD | Chemical Manufacturing325120 | 20-99 | ◐ LIKELY ACTIVE |
| BCBaltimore Comp Maint | Baltimore | MD | Fabricated Metal Product Manufacturing332439 | 1-19 | ◐ LIKELY ACTIVE |
| BMBaltimore MD - Holabird | Baltimore | MD | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| BPBaltimore Plant | Baltimore | MD | Beverage and Tobacco Product Manufacturing312111 | 20-99 | ◐ LIKELY ACTIVE |
| BNBarcelona Nut Company | Baltimore | MD | Food Manufacturing311911 | 20-99 | ◐ LIKELY ACTIVE |
| BRBay Ready Mix of Maryland Llc | Baltimore | MD | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| BWBent Wine Company LLC | Baltimore | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
