| RDRpg Diffuser Systems | Upper Marlboro | MD | Computer and Electronic Product Manufacturing334220 | — | ◇ UNVERIFIED |
| SDSmiths Detection Edgewood, INC. | Edgewood | MD | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| SASwales & Assoc Frederick Av | Beltsville | MD | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| WSWilcoxon Sensing Technologies | Frederick | MD | Computer and Electronic Product Manufacturing334519 | — | ◇ UNVERIFIED |
| ACAbsolute Controls LLC | Frederick | MD | Computer and Electronic Product Manufacturing334512 | — | ◐ LIKELY ACTIVE |
| AEAce Electronics Defense Systems, LLC | Aberdeen Proving Ground | MD | Computer and Electronic Product Manufacturing334419 | — | ◐ LIKELY ACTIVE |
| AMAdvanced Mission Partners LLC | Linthicum Heights | MD | Computer and Electronic Product Manufacturing334418 | — | ◐ LIKELY ACTIVE |
| ATAllumax Tti, LLC | Adamstown | MD | Computer and Electronic Product Manufacturing334419 | — | ◐ LIKELY ACTIVE |
| AMAlpha Mos America INC | Glen Burnie | MD | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| ATAppropriate Technical Resources LLC | Mount Airy | MD | Computer and Electronic Product Manufacturing334516 | — | ◐ 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 |
| BNBrilliant Neurotechnologies LLC | Ellicott City | MD | Computer and Electronic Product Manufacturing334510 | — | ◐ LIKELY ACTIVE |
| BUByk-gardner USA LLC | Columbia | MD | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| CLCaci Lgs Innovations LLC | Jessup | MD | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| CTCea Technologies INC | Hanover | MD | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| CDChaostech Defense LLC | Suitland | MD | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| CTCharon Technologies, LLC | Columbia | MD | Computer and Electronic Product Manufacturing334515 | — | ◐ LIKELY ACTIVE |
| CAChips Ai LLC | Potomac | MD | Computer and Electronic Product Manufacturing334413 | — | ◐ LIKELY ACTIVE |
| CColumbia | Columbia | MD | Computer and Electronic Product Manufacturing334220 | 1-19 | ◐ LIKELY ACTIVE |
| 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 |
| 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 |
| 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. | Annapolis Junction | MD | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Mission Systems, INC. | Aberdeen Proving Ground | 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 |
| KAKIP America, Inc. - Maryland | Baltimore | MD | Computer and Electronic Product Manufacturing334118 | 1-19 | ◐ 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 |