Blackstone Advanced Technologies LLC | Jamestown | 100–499 | ● ACTIVE |
| DMDawson Metal Company INC | Jamestown | 20–99 | ● ACTIVE |
Ellison Bronze INC | Falconer | 20–99 | ● ACTIVE |
Hope's Windows, INC | Jamestown | 100–499 | ● ACTIVE |
| IOInternational Ordnance Technologies, INC. | Jamestown | 20–99 | ● ACTIVE |
Jamestown Electro Plating Works, INC | Jamestown | 20–99 | ● ACTIVE |
Industrial Metal Finishing INC | Jamestown | — | ● ACTIVE |
Premier Precision Machining LLC | Falconer | 20–99 | ● ACTIVE |
Rollform of Jamestown, INC. | Jamestown | 20–99 | ● ACTIVE |
| APAnderson Precision | Jamestown | 20–99 | ◐ LIKELY ACTIVE |
| WKWeber Knapp Corporation | Jamestown | 100–499 | ◐ LIKELY ACTIVE |
Bailey Manufacturing Company LLC | Forestville | 20–99 | ◐ LIKELY ACTIVE |
| BBBlackstone Business Enterprises INC | Jamestown | — | ◐ LIKELY ACTIVE |
| UPUlrich Planfiling Equipment CORP | Lakewood | — | ◐ LIKELY ACTIVE |
| CBClassic Brass INC | Jamestown | — | ◇ UNVERIFIED |
| CPChautauqua Precision Machining, INC. | Ashville | — | ◐ LIKELY ACTIVE |
| JAJamestown Advanced Products, CORP. | Jamestown | 100–499 | ◐ LIKELY ACTIVE |
| SUSkf USA INC. | Falconer | — | ◐ LIKELY ACTIVE |
| SMSpecial Metals Dunkirk | Dunkirk | 20–99 | ◐ LIKELY ACTIVE |
| STSpray Tech Finishing, INC | Falconer | — | ◐ LIKELY ACTIVE |
| STStuart Tool & Die, INC. | Falconer | — | ◐ LIKELY ACTIVE |
| WHWsb Hardware INC | Falconer | — | ◐ LIKELY ACTIVE |
| CHChautauqua Hardware CORP | Jamestown | — | ◇ UNVERIFIED |
| CBClassic Brass INC | Lakewood | — | ◇ UNVERIFIED |
| DCDiversified Components INC | Jamestown | — | ◇ UNVERIFIED |
| DMDunkirk Metal Product INC | Dunkirk | — | ◇ UNVERIFIED |
| ENExcelco Newbrook INC | Silver Creek | — | ◇ UNVERIFIED |
Hope's Windows, INC. - Allen St Facility | Falconer | — | ◇ UNVERIFIED |
| IMIndustrial Metal Finishing INC | Jamestown | — | ◇ UNVERIFIED |
| JMJamestown Metal Products LLC | Jamestown | — | ◇ UNVERIFIED |
| MTMatco Tools | Lakewood | — | ◇ UNVERIFIED |
| MBMrc Bearings Jamestown Plant | Jamestown | — | ◇ UNVERIFIED |
| PFPremier Finishing INC | Jamestown | — | ◇ UNVERIFIED |
| SASkf Aeroengine North America | Falconer | — | ◇ UNVERIFIED |
| CBClassic Brass Inc - Main | Jamestown | 20–99 | ◐ LIKELY ACTIVE |
| DRDahlstrom Roll Form | Falconer | 20–99 | ◐ LIKELY ACTIVE |
Excelco/newbrook INC | Silver Creek | — | ◐ LIKELY ACTIVE |
| LPLinc Products & Services LLC | Gerry | — | ◐ LIKELY ACTIVE |
| MEMasterGrind EDM II | Jamestown | 20–99 | ◐ LIKELY ACTIVE |
| NFNew Flyer America | Jamestown | 100–499 | ◐ LIKELY ACTIVE |
| RWRegal Warehousing Services, Inc. DBA Jackson Ave Warehouse | Jamestown | 20–99 | ◐ LIKELY ACTIVE |
| WKWeber Knapp Company- Allen Street Plant | Falconer | 20–99 | ◐ LIKELY ACTIVE |
| LPLakeside Precision INC. | Dunkirk | — | ◇ UNVERIFIED |
| AMAll Metal Specialties INC | Jamestown | — | ◇ UNVERIFIED |
| ATArro Tool & Die, INC. | Lakewood | — | ◇ UNVERIFIED |
| CTContainer Testing Solutions, Inc. | Jamestown | — | ◇ UNVERIFIED |
| HFHahn Fabrication and Development, LLC | Forestville | — | ◇ UNVERIFIED |
| HWHopes Windows INC | Falconer | — | ◇ UNVERIFIED |
| HMHudson Motorsports LLC | Dunkirk | — | ◇ UNVERIFIED |
| NWNational Wire & Metal Technologies, INC. | Jamestown | — | ◇ UNVERIFIED |