| ACAcdi (american Computer Development) | Frederick | MD | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| DGDaniel G. Schuster, INC. - Frederick Plant | Frederick | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MPMccormick Paint Works CO | Frederick | MD | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| CMCrowley Micrographics, INC. | Frederick | MD | Computer and Electronic Product Manufacturing334118 | — | ◐ LIKELY ACTIVE |
Inventwood INC. | Frederick | MD | Wood Product Manufacturing321999 | — | ◐ LIKELY ACTIVE |
Life Science Products, Incorporated | Frederick | CO | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| USUnited States Antenna Products, L.l.c. | Frederick | MD | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| PPPacemaker Press | Frederick | MD | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| FRFront Range Tooling INC | Frederick | CO | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| IInventwood-frederick | Frederick | MD | Wood Product Manufacturing321215 | — | ◐ LIKELY ACTIVE |
| MIMedimmune INC | Frederick | MD | Chemical Manufacturing325414 | — | ◐ LIKELY ACTIVE |
| MMMeeker's Meadery | Frederick | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| MFMorningstar Foods LLC | Frederick | MD | Food Manufacturing311511 | — | ◐ LIKELY ACTIVE |
| OMOperose Manufacturing, INC | Frederick | CO | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| RFRichard F. Kline, INC | Frederick | MD | Petroleum and Coal Products Manufacturing324121 | — | ◐ LIKELY ACTIVE |
| TBTAMKO Building Products LLC - Frederick | Frederick | MD | Petroleum and Coal Products Manufacturing324122 | 100-499 | ◐ LIKELY ACTIVE |
| WFWindridge Farm | Frederick | MD | Food Manufacturing311119 | — | ◐ LIKELY ACTIVE |
| APAstrazeneca, Plp | Frederick | MD | Chemical Manufacturing325414 | — | ◐ LIKELY ACTIVE |
| BBBimbo Bakeries Usa, INC | Frederick | MD | Food Manufacturing311812 | — | ◐ LIKELY ACTIVE |
| FAFrederick Asphalt Co/essroc Site | Frederick | MD | Petroleum and Coal Products Manufacturing324121 | — | ◐ LIKELY ACTIVE |
| MIMetlfab INC | Frederick | MD | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
| RMRaptor Materials - Portable Crusher/scre | Frederick | CO | Machinery Manufacturing333120 | — | ◐ LIKELY ACTIVE |
| ASAbound Solar | Frederick | CO | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| ATApi Technologies-weinschel | Frederick | MD | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| ACApplied Coatings Technologies INC | Frederick | CO | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| APAstrazeneca, Plp | Frederick | MD | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| BCBarnes Cabinet Shop | Frederick | MD | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| CPCapricorn Pharma | Frederick | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| EAEastalco Aluminum CO | Frederick | MD | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| IRIntracel Resources LLC | Frederick | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| KPKite Pharma, INC. | Frederick | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| LALafarge Aggregates & Concrete | Frederick | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LTLife Technologies | Frederick | MD | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
Life Technologies | Frederick | MD | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| PCPcc Composites | Frederick | CO | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| PIProlist INC | Frederick | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| FW[r3 Fy12] Window Depot USA of Frederick | Frederick | MD | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| RMRinker Materials Hydro Conduit- Frederick | Frederick | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SSSouthern States Coop, INC. - Frederick | Frederick | MD | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| WCWerres Corporation | Frederick | MD | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
| WSWilcoxon Sensing Technologies | Frederick | MD | Computer and Electronic Product Manufacturing334519 | — | ◇ UNVERIFIED |
| 0D01- Denver Metal Sales Manufacturing Corporation | Frederick | CO | Fabricated Metal Product Manufacturing332311 | 20-99 | ◐ LIKELY ACTIVE |
| 3F342 Frederick MD | Frederick | MD | Food Manufacturing311811 | 20-99 | ◐ LIKELY ACTIVE |
| ACAbsolute Controls LLC | Frederick | MD | Computer and Electronic Product Manufacturing334512 | — | ◐ LIKELY ACTIVE |
| AHAqua Hot Heating Systems | Frederick | CO | Machinery Manufacturing333414 | 20-99 | ◐ LIKELY ACTIVE |
| AAArnold Aviation Dynamics LLC | Frederick | MD | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| AFAstraZeneca Frederick Manufacturing Center | Frederick | MD | Chemical Manufacturing325414 | 500+ | ◐ LIKELY ACTIVE |
| AAzabu | Frederick | MD | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| BSBarton Supply Frederick | Frederick | CO | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| BCBig Cork Vineyards | Frederick | MD | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |