| NGNorthrop Grumman Sys CORP | Gaithersburg | MD | Computer and Electronic Product Manufacturing334290 | — | ◇ UNVERIFIED |
| 1E18825 Enterprises, LLC | Gaithersburg | MD | Miscellaneous Manufacturing339920 | — | ▲ REPORTED CLOSED |
| AFAir Flow Environmental Control LTD | Gaithersburg | MD | Machinery Manufacturing333415 | — | ◐ LIKELY ACTIVE |
| ABAqua Bert LLC | Gaithersburg | MD | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| CLCryo-express, LLC | Gaithersburg | MD | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| DGDC - Gaithersburg VM | Gaithersburg | MD | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
Excelitas Technologies Corp. | Gaithersburg | MD | Machinery Manufacturing333994 | 20-99 | ◐ LIKELY ACTIVE |
| FTFirst Trade International Corporation | Gaithersburg | MD | Computer and Electronic Product Manufacturing334118 | — | ◐ LIKELY ACTIVE |
| FAFulcrum Autonomy Laytonsville | Gaithersburg | MD | Transportation Equipment Manufacturing336411 | 1-19 | ◐ LIKELY ACTIVE |
| GBGaithersburg Branch 01 | Gaithersburg | MD | Chemical Manufacturing325120 | 100-499 | ◐ LIKELY ACTIVE |
| LVLogo Vision LLC | Gaithersburg | MD | Printing and Related Support Activities323113 | — | ◐ LIKELY ACTIVE |
| SPSaint-Gobain PERF PLASTCS CORP | Gaithersburg | MD | Plastics and Rubber Products Manufacturing326111 | 20-99 | ◐ LIKELY ACTIVE |
| TSTwo Story Chimney Ciderworks LLC | Gaithersburg | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| VIVace Inc. | Gaithersburg | MD | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
Xometry, INC. | Gaithersburg | MD | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| MPMaster Prototype Machining, INC. | Gaithersburg | MD | Machinery Manufacturing333998 | — | ◐ LIKELY ACTIVE |
| 2O2 Oceans Enterprises LLC | Gaithersburg | MD | Nonmetallic Mineral Product Manufacturing327211 | — | ◇ UNVERIFIED |
| CMCatalent Maryland Inc, - Gaithersburg | Gaithersburg | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| CICompubahn Inc | Gaithersburg | MD | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| CSCustom Sheet Metal, INC. | Gaithersburg | MD | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| KSKEAN Signs Inc. | Gaithersburg | MD | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| LTLentigen Technology, INC. | Gaithersburg | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LDLine Dot LLC | Gaithersburg | MD | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| NINeximmune, INC | Gaithersburg | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| PFPerfect Fit Window Fashions, INC. | Gaithersburg | MD | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| RRReproductions - Rickenbacker Drive | Gaithersburg | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| RSRoamer Solutions LLC | Gaithersburg | MD | Transportation Equipment Manufacturing336213 | — | ◇ UNVERIFIED |
| SMShayrazs Marketing Solutions, INC. | Gaithersburg | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| SSignarama | Gaithersburg | MD | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| SCSpirent Communications | Gaithersburg | MD | Computer and Electronic Product Manufacturing334515 | — | ◇ UNVERIFIED |
| SDSunny Dental Lab Group Inc | Gaithersburg | MD | Miscellaneous Manufacturing339116 | — | ◇ UNVERIFIED |
| TITech-skill, INC. | Gaithersburg | MD | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| TCTen Cars Holding LLC | Gaithersburg | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |