| CSColumbia Shop | Columbia | MD | Computer and Electronic Product Manufacturing334516 | 1-19 | ◐ LIKELY ACTIVE |
| CUControp USA INC | Germantown | MD | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
Crowley Micrographics, INC. | Frederick | MD | Computer and Electronic Product Manufacturing334118 | — | ◐ LIKELY ACTIVE |
| DNDatadirect Networks Federal, LLC | Columbia | MD | Computer and Electronic Product Manufacturing334112 | — | ◐ LIKELY ACTIVE |
| D9DFM 9701 O'Brien Road | Fort Meade | MD | Computer and Electronic Product Manufacturing334511 | 1-19 | ◐ LIKELY ACTIVE |
| DSDjm Security Services, LLC | Glenelg | MD | Computer and Electronic Product Manufacturing334515 | — | ◐ LIKELY ACTIVE |
Doble Engineering Company (Accident, MD) | Accident | MD | Computer and Electronic Product Manufacturing334515 | 100-499 | ◐ LIKELY ACTIVE |
| ECEastern Controls- ECI MD | Townson | MD | Computer and Electronic Product Manufacturing334513 | 1-19 | ◐ LIKELY ACTIVE |
| EWEmanate Wireless, INC. | Ijamsville | MD | Computer and Electronic Product Manufacturing334515 | — | ▲ REPORTED CLOSED |
| FTFeddata Technology Solutions, LLC | Annapolis Junction | MD | Computer and Electronic Product Manufacturing334111 | — | ◐ LIKELY ACTIVE |
| FTFirst Trade International Corporation | Gaithersburg | MD | Computer and Electronic Product Manufacturing334118 | — | ◐ LIKELY ACTIVE |
| FTFormosa Technology Link LLC | Halethorpe | MD | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| FSFotofinder Systems INC | Columbia | MD | Computer and Electronic Product Manufacturing334510 | — | ◐ LIKELY ACTIVE |
| FLFrederick Lab | Frederick | MD | Computer and Electronic Product Manufacturing334516 | 1-19 | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Information Technology, INC | Hanover | MD | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Mission Systems, INC. | Annapolis Junction | MD | Computer and Electronic Product Manufacturing334111 | — | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Mission Systems, INC. | Aberdeen Proving Ground | MD | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Mission Systems, INC. | Annapolis Junction | MD | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| GPGlobal Public Safety LLC | Hanover | MD | Computer and Electronic Product Manufacturing334511 | — | ▲ REPORTED CLOSED |
| HHeadquarters | Columbia | MD | Computer and Electronic Product Manufacturing334516 | 100-499 | ◐ 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 |
| 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 |
| ITIp Technology Labs LLC | Baltimore | MD | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| JTJaak Tech LLC | Calverton | MD | Computer and Electronic Product Manufacturing334111 | — | ◐ LIKELY ACTIVE |
| KAKIP America, Inc. - Maryland | Baltimore | MD | Computer and Electronic Product Manufacturing334118 | 1-19 | ◐ LIKELY ACTIVE |
| KMK&l Microwave LLC | Salisbury | MD | Computer and Electronic Product Manufacturing334419 | — | ◐ LIKELY ACTIVE |
| LPLexington Park, MD (02T) | Lexington Park | MD | Computer and Electronic Product Manufacturing334220 | 20-99 | ◐ LIKELY ACTIVE |
| LMLockheed Martin Corporation US Telegraph Rd Severn (5778) | Severn | MD | Computer and Electronic Product Manufacturing334418 | 20-99 | ◐ LIKELY ACTIVE |
| MFMarriottsville Facility | Marriottsville | MD | Computer and Electronic Product Manufacturing334111 | 20-99 | ◐ LIKELY ACTIVE |
| MMd | Annapolis | MD | Computer and Electronic Product Manufacturing334413 | 20-99 | ◐ LIKELY ACTIVE |
| MHMD, Hanover - 7468 Candlewood Rd, (IMS-M) | Hanover | MD | Computer and Electronic Product Manufacturing334511 | 20-99 | ◐ LIKELY ACTIVE |
| MMMD, Millersville - All Benfield Blvd. (IMS-M) | Millersville | MD | Computer and Electronic Product Manufacturing334511 | 100-499 | ◐ LIKELY ACTIVE |
| MRMid-Atlantic Regional (MAT) | Columbia | MD | Computer and Electronic Product Manufacturing334516 | 20-99 | ◐ LIKELY ACTIVE |
| MCMiltek Corporation | Leonardtown | MD | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| MSMotorola Solutions | Linthicum | MD | Computer and Electronic Product Manufacturing334220 | 20-99 | ◐ LIKELY ACTIVE |
| MSMotorola Solutions INC | Lanham | MD | Computer and Electronic Product Manufacturing334220 | 20-99 | ◐ LIKELY ACTIVE |
| MSMotorola Solutions INC | Beltsville | MD | Computer and Electronic Product Manufacturing334220 | 20-99 | ◐ LIKELY ACTIVE |
| NLNarc-gard LLC | Aberdeen | MD | Computer and Electronic Product Manufacturing334510 | — | ▲ REPORTED CLOSED |
| NMNeocera Magma LLC | Beltsville | MD | Computer and Electronic Product Manufacturing334515 | — | ◐ LIKELY ACTIVE |
| NINew Integration Photonics | Chevy Chase | MD | Computer and Electronic Product Manufacturing334413 | — | ◐ LIKELY ACTIVE |
| NNgms-b750 | Annapolis | MD | Computer and Electronic Product Manufacturing334511 | 500+ | ◐ LIKELY ACTIVE |
| NNgms-b901 | Linthicum | MD | Computer and Electronic Product Manufacturing334511 | 100-499 | ◐ LIKELY ACTIVE |
| NNgms-q953 | Elkridge | MD | Computer and Electronic Product Manufacturing334511 | 500+ | ◐ LIKELY ACTIVE |
| NNgms-t300 | Linthicum | MD | Computer and Electronic Product Manufacturing334511 | 500+ | ◐ LIKELY ACTIVE |
| NNgms-t339 | Linthicum | MD | Computer and Electronic Product Manufacturing334511 | 100-499 | ◐ LIKELY ACTIVE |
| NNgms-t340 | Baltimore | MD | Computer and Electronic Product Manufacturing334511 | 500+ | ◐ LIKELY ACTIVE |
| NNgms-t343 | Linthicum | MD | Computer and Electronic Product Manufacturing334413 | 500+ | ◐ LIKELY ACTIVE |
| NNgms-t348 | Linthicum | MD | Computer and Electronic Product Manufacturing334511 | 100-499 | ◐ LIKELY ACTIVE |