| ATAtlantic Tractor LLC | Salisbury | MD | Machinery Manufacturing333111 | — | ◐ LIKELY ACTIVE |
| ATAtlantic Tractor LLC | Pocomoke City | MD | Machinery Manufacturing333111 | — | ◐ LIKELY ACTIVE |
| AGATX Garage Distilling | Monrovia | MD | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| ACA&W Country Meats, Inc. | Taneytown | MD | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |
| AAzabu | Frederick | MD | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BLBabyshield L.l.c | Waldorf | MD | Food Manufacturing311999 | — | ◐ LIKELY ACTIVE |
| BABad Apple Farms | Baltimore | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BLBad Lab Apparel, LLC | Middle River | MD | Printing and Related Support Activities323113 | — | ◐ LIKELY ACTIVE |
| BSBAE Systems I&S - Lexington Park | Lexington Park | MD | Computer and Electronic Product Manufacturing334290 | 100-499 | ◐ LIKELY ACTIVE |
| BSBAE Systems I&S - Maritime Solutions | California | MD | Computer and Electronic Product Manufacturing334511 | 100-499 | ◐ LIKELY ACTIVE |
| BSBAE Systems I&S - T&E | California | MD | Computer and Electronic Product Manufacturing334511 | 20-99 | ◐ 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 | Elkridge | MD | Food Manufacturing311520 | 20-99 | ◐ LIKELY ACTIVE |
| BBBaltimore Branch 19 | Baltimore | MD | Chemical Manufacturing325120 | 20-99 | ◐ LIKELY ACTIVE |
| BBBaltimore BWI | Harmans | MD | Chemical Manufacturing325412 | 500+ | ◐ LIKELY ACTIVE |
| BCBaltimore Comp Maint | Baltimore | MD | Fabricated Metal Product Manufacturing332439 | 1-19 | ◐ LIKELY ACTIVE |
| BMBaltimore Machine Works LLC | Phoenix | MD | Fabricated Metal Product Manufacturing332710 | — | ◐ 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 |
| BWBaltimore Whse 2 | Nottingham | MD | Food Manufacturing311812 | 20-99 | ◐ LIKELY ACTIVE |
| BNBarcelona Nut Company | Baltimore | MD | Food Manufacturing311911 | 20-99 | ◐ LIKELY ACTIVE |
| BBBark Boulder Company LLC | Myersville | MD | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| BBBavdc Baltimore, Vdc | Sparrows Point | MD | Transportation Equipment Manufacturing336111 | 20-99 | ◐ LIKELY ACTIVE |
| BLBay Life Brewing | Jessup | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BRBay Ready Mix of Maryland Llc | Baltimore | MD | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| BDBD Diagnostic Systems - Baltimore | Sparks Glencoe | MD | Chemical Manufacturing325413 | 500+ | ◐ LIKELY ACTIVE |
| BPBel-Art Products, Pocomoke, MD | Pocomoke | MD | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| BTBell Textron INC. | Lexington Park | MD | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| BWBent Wine Company LLC | Baltimore | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BCBig Cork Vineyards | Frederick | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BMBinkert's Meat Products, LLC | Baltimore | MD | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| BIBioqrypt INC | Severna Park | MD | Wood Product Manufacturing321999 | — | ◐ LIKELY ACTIVE |
| BVBirch View Vineyard | Manchester | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BWBJ's Wholesale Club Holdings, Inc | Elkton | MD | — | — | ◐ LIKELY ACTIVE |
| BBBlackstone Brothers, LLC | Finksburg | MD | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BCBlackthorne Cellars LLC | Oakland | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BDBlackwater Distilling, INC. | Stevensville | MD | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BBBladensburg Branch 27 | Bladensburg | MD | Chemical Manufacturing325120 | 1-19 | ◐ LIKELY ACTIVE |
| BIBlind Industries and Services of Maryland | Salisbury | MD | Apparel Manufacturing315250 | — | ◐ LIKELY ACTIVE |
| BIBlind Industries - Salisbury Cutting | Salisbury | MD | Textile Mills313230 | 20-99 | ◐ LIKELY ACTIVE |
| BIBlind Industries - Salisbury Sewing | Salisbury | MD | Textile Mills313230 | 100-499 | ◐ LIKELY ACTIVE |
| BMBlue Mountain Wine Crafters LLC | Funkstown | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BPBlueprint Partners Corp | Baltimore | MD | Wood Product Manufacturing321992 | 20-99 | ◐ LIKELY ACTIVE |
| BCBlystone Consulting Services, L.l.c | Frederick | MD | Printing and Related Support Activities323111 | — | ◐ LIKELY ACTIVE |
| BMBohemia Manor Farm Wine LLC | Chesapeake City | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BOBohemia Overlook Vineyard | North East | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BWBonita Winery & Vineyard | Darlington | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BWBordeleau Winery | St. Michaels | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| BWBordeleau Winery | Eden | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |