| LNLinde Niagara Falls | Niagara Falls | NY | Chemical Manufacturing325120 | 20-99 | ◐ LIKELY ACTIVE |
| MIMoog, Inc. - Moog ISP | Niagara Falls | NY | Transportation Equipment Manufacturing336415 | 100-499 | ◐ LIKELY ACTIVE |
| NFNiagara Falls Distilling | Niagara Falls | NY | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| NGNuttall Gear L L C | Niagara Falls | NY | Machinery Manufacturing333612 | — | ◐ LIKELY ACTIVE |
| OCOlin Corporation - Niagara Falls Operations | Niagara Falls | NY | Chemical Manufacturing325180 | 500+ | ◐ LIKELY ACTIVE |
| RIRUS Industries Inc. | Niagara Falls | NY | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
| NMNational Maintenance Contracting CORP. | Niagara Falls | NY | Fabricated Metal Product Manufacturing332312 | 20-99 | ◇ UNVERIFIED |
| NCNiagara Custom Plating, Inc. | Niagara Falls | NY | Fabricated Metal Product Manufacturing332813 | 1-19 | ◇ UNVERIFIED |
| NMNiagara Monument Works INC. | Niagara Falls | NY | Nonmetallic Mineral Product Manufacturing327991 | 1-19 | ◇ UNVERIFIED |
| NWNiagara Wholesale Supply | Niagara Falls | NY | Wood Product Manufacturing321920 | 1-19 | ◇ UNVERIFIED |
| PCPenetradar Corporation | Niagara Falls | NY | Computer and Electronic Product Manufacturing334511 | 1-19 | ◇ UNVERIFIED |
| SCSkrlin Coating & Blasting INC. | Niagara Falls | NY | Fabricated Metal Product Manufacturing332312 | 1-19 | ◇ UNVERIFIED |
| TJThe Johnnie Ryan Co Inc | Niagara Falls | NY | Beverage and Tobacco Product Manufacturing312111 | 1-19 | ◇ UNVERIFIED |
| TLThe Liddell Corporation | Niagara Falls | NY | Chemical Manufacturing325611 | 1-19 | ◇ UNVERIFIED |
| VCViking Consolidated Services, Inc. | Niagara Falls | NY | Primary Metal Manufacturing331110 | 1-19 | ◇ UNVERIFIED |
| CCCorotech CO. | Niagara Falls | NY | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| DUDelfingen U.s. New York, INC. | Niagara Falls | NY | Plastics and Rubber Products Manufacturing326299 | — | ◇ UNVERIFIED |
| EDE.i. Du Pont De Nemours and Company, INC. Niagara Site | Niagara Falls | NY | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| FFFrancesca's Foods, inc | Niagara Falls | NY | Food Manufacturing311412 | — | ◇ UNVERIFIED |
| HEHelmel Engineering Products, INC. | Niagara Falls | NY | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| IFImerys Fused Minerals, INC. | Niagara Falls | NY | Nonmetallic Mineral Product Manufacturing327910 | — | ◇ UNVERIFIED |
| POPlastic2oil of Ny | Niagara Falls | NY | Petroleum and Coal Products Manufacturing324199 | — | ◇ UNVERIFIED |
| PCPliotron Company of America L.l.c. | Niagara Falls | NY | Machinery Manufacturing333411 | — | ◇ UNVERIFIED |
| TCThe Chemours Company | Niagara Falls | NY | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| USUnited Stones International INC. | Niagara Falls | NY | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |