| HHHamish Holdings LLC | Beltsville | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| HMHampstead MFG (T&O, TOOLS) | Hampstead | MD | Fabricated Metal Product Manufacturing332117 | 20-99 | ◐ LIKELY ACTIVE |
| HSHamzah Slaughter House, LLC | Williamsport | MD | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |
| HSHanover Satellite Assembly | Hanover | MD | Electrical Equipment, Appliance & Component Manufacturing335313 | 20-99 | ◐ LIKELY ACTIVE |
| HPHarmonious Plumbing LLC | New Market | MD | Fabricated Metal Product Manufacturing332913 | — | ◐ LIKELY ACTIVE |
Hartman Enterprises Inc. DBA Hartman Meat Co. | Hyattsville | MD | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| HHeadquarters | Columbia | MD | Computer and Electronic Product Manufacturing334516 | 100-499 | ◐ LIKELY ACTIVE |
| HKHearn Kirkwood / Food Unlimited | Jessup | MD | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| HMHenry M. Wright & Co., INC. | Baltimore | MD | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| HFHerr Foods - 027 Warehouse North East | North East | MD | Food Manufacturing311919 | 20-99 | ◐ LIKELY ACTIVE |
| HFHerr Foods - 068 Elkridge MD | Elkridge | MD | Food Manufacturing311919 | 20-99 | ◐ LIKELY ACTIVE |
| HHHidden Hills Farm and Vineyard | Frederick | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| HHHidden Hills Farm and Vineyard | Frederick | MD | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| HFHighland Farm Fresh LLC | Grantsville | MD | Food Manufacturing311615 | — | ◐ LIKELY ACTIVE |
| HMHinshaw Marketing & Sales, Incorporated | Hagerstown | MD | Furniture and Related Product Manufacturing337215 | — | ◐ LIKELY ACTIVE |
| HJH. J. Smith Distillers, LLC | Newburg | MD | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| HHmdaj01 | Annapolis Junction | MD | Computer and Electronic Product Manufacturing334511 | 20-99 | ◐ LIKELY ACTIVE |
| HHmdaj06 | Annapolis Junction | MD | Computer and Electronic Product Manufacturing334511 | 20-99 | ◐ LIKELY ACTIVE |
| HBHohmann & Barnard (Maryland) | Columbia | MD | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| HPHolly Poultry, Inc. | Hanover | MD | Food Manufacturing311615 | — | ◐ LIKELY ACTIVE |
| HLHonest Logistics LLC | Joppa | MD | Fabricated Metal Product Manufacturing332722 | — | ◐ LIKELY ACTIVE |
| HMHorst Meats | Hagerstown | MD | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |
| HBHoward By Howard Business Solutions, LLC | Laurel | MD | Machinery Manufacturing333613 | — | ◐ LIKELY ACTIVE |
| HGHpe Government, LLC | Annapolis Junction | MD | Computer and Electronic Product Manufacturing334111 | — | ◐ LIKELY ACTIVE |
| HNHughes Network Systems, Manufacturing. | Germantown | MD | Computer and Electronic Product Manufacturing334220 | 100-499 | ◐ LIKELY ACTIVE |
| HVHunt Valley | Hunt Valley | MD | Transportation Equipment Manufacturing336411 | 500+ | ◐ LIKELY ACTIVE |
| HFHurlock Feedmill | Hurlock | MD | Food Manufacturing311119 | 20-99 | ◐ LIKELY ACTIVE |
| HAHVAC and Plumbing Fab Shop | Baltimore | MD | Fabricated Metal Product Manufacturing332996 | 20-99 | ◐ LIKELY ACTIVE |
| HHHydroair Hughes, LLC | Joppa | MD | Machinery Manufacturing333996 | — | ◐ LIKELY ACTIVE |
| ICIcs Contracting LLC | Owings | MD | Furniture and Related Product Manufacturing337212 | — | ◐ LIKELY ACTIVE |
| IIIcufree INC | Severna Park | MD | Miscellaneous Manufacturing339112 | — | ◐ LIKELY ACTIVE |
| IFIhsan Farms, Iic | Princess Anne | MD | Food Manufacturing311615 | — | ◐ LIKELY ACTIVE |
| IFImperial Fabrication LLC | Elkton | MD | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| INImperial Ninetyfour LLC | Lanham | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| INImperial Ninetyfour LLC | Baltimore | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| IMIncremental Machine LLC | Baltimore | MD | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| IPInferno Phils Outpost LLC | Catonsville | MD | Food Manufacturing311422 | — | ◐ LIKELY ACTIVE |
| IPInterbalt Products CORP. | Rockville | MD | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| ICInterior Concepts, Inc. | Annapolis | MD | Furniture and Related Product Manufacturing337212 | 20-99 | ◐ LIKELY ACTIVE |
| IQInternational Quality Advantage LLC | Windsor Mill | MD | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| ISIntralox Sparrows Point | Rdgemere | MD | Machinery Manufacturing333922 | 100-499 | ◐ LIKELY ACTIVE |
| IVIn Vitro Inc. d.b.a. BioIVT, LLC | Baltimore | MD | Chemical Manufacturing325413 | 100-499 | ◐ LIKELY ACTIVE |
| ITIp Technology Labs LLC | Baltimore | MD | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| JPJ3d Prints LLC | Laurel | MD | Printing and Related Support Activities323111 | — | ◐ LIKELY ACTIVE |
| JSJack Stone | Landover | MD | Miscellaneous Manufacturing339950 | 20-99 | ◐ LIKELY ACTIVE |
| JWJanemark Winery & Vineyard | Brandywine | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| JWJbm Woodworks LLC | Solomons | MD | Wood Product Manufacturing321999 | — | ◐ LIKELY ACTIVE |
| JHJD's House of Bacon, Inc. | Baltimore | MD | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| JJessup | Jessup | MD | Chemical Manufacturing325120 | 20-99 | ◐ LIKELY ACTIVE |
| JMJessup MD Millwork | Jessup | MD | Furniture and Related Product Manufacturing337212 | 20-99 | ◐ LIKELY ACTIVE |