| NINix Industrial - Main Street | Poseyville | IN | 20–99 | ◐ LIKELY ACTIVE |
| NINix Industrial - Rockport, IN | Rockport | IN | 20–99 | ◐ LIKELY ACTIVE |
| NCNKC Conveyor Installation Company | Memphis | TN | 20–99 | ◐ LIKELY ACTIVE |
| NINMP, Inc (dba: Nowak Machined Products) | Muskegon | MI | 20–99 | ◐ LIKELY ACTIVE |
| NINN, Inc. - Corporate | Charlotte | NC | 20–99 | ◐ LIKELY ACTIVE |
| NMNnm Manufacturing LLC | Plainfield | IL | — | ◐ LIKELY ACTIVE |
| NTNoble Tool LLC | Dayton | OH | 1–19 | ◐ LIKELY ACTIVE |
| NMNoble-X Main Building | Amery | WI | 20–99 | ◐ LIKELY ACTIVE |
| NINoblitt International Corporation | Columbus | IN | — | ◐ LIKELY ACTIVE |
| NSNol-Tec Systems, Inc. | Lino Lakes | MN | 20–99 | ◐ LIKELY ACTIVE |
| NDNomad Defense LLC | Yukon | OK | — | ▲ REPORTED CLOSED |
| NNNo Name Precision, LLC | San Jose | CA | — | ◐ LIKELY ACTIVE |
| NGNorfork General Industries, Inc | Norfork | AR | 20–99 | ◐ LIKELY ACTIVE |
| NANorgren Automation Solutions Rochester Hills | Rochester Hills | MI | 20–99 | ◐ LIKELY ACTIVE |
| NSNorlen - Schofield | Schofield | WI | 100–499 | ◐ LIKELY ACTIVE |
| NSNorman Scott Co. dba In Tolerance | Cedar Rapids | IA | 20–99 | ◐ LIKELY ACTIVE |
| NCNorris Cylinder Company - Huntsville | Huntsville | AL | 100–499 | ◐ LIKELY ACTIVE |
| NLNorspares LLC | Lake Worth | FL | — | ◐ LIKELY ACTIVE |
| NNorth | Erie | PA | 20–99 | ◐ LIKELY ACTIVE |
| NANorth American Fuel Tanks, INC. | Mansfield | TX | — | ◐ LIKELY ACTIVE |
| NANorth American Industrial Supply Inc dba/ Uselton Painting and Fabrication Company | Louisville | KY | 20–99 | ◐ LIKELY ACTIVE |
| NANorth American Manufacturing Corp. | Maspeth | NY | 1–19 | ◐ LIKELY ACTIVE |
| NANorth American Metallurgic Solutions | Central City | KY | 20–99 | ◐ LIKELY ACTIVE |
| NANorth American Tool and Machine, INC. | Emporium | PA | — | ◐ LIKELY ACTIVE |
| NNorthchase | Houston | TX | 100–499 | ◐ LIKELY ACTIVE |
| NSNortheast Service Center | Lewisberry | PA | 1–19 | ◐ LIKELY ACTIVE |
| NMNorther Metal Fab | Baldwin | WI | 20–99 | ◐ LIKELY ACTIVE |
| NCNorthern Contours Corporate | Mendota Heights | MN | 20–99 | ◐ LIKELY ACTIVE |
| NHNorthern Horizons Solway, Inc | Solway | MN | 100–499 | ◐ LIKELY ACTIVE |
| NINorthern Industrial Repair LLC | Landenberg | PA | — | ◐ LIKELY ACTIVE |
| NSNorthern Steel Services, L.L.C. | Montrose | MI | 20–99 | ◐ LIKELY ACTIVE |
| NFNorthland Forest Products Inc | Shakopee | MN | 20–99 | ◐ LIKELY ACTIVE |
| NPNorthland Precision, INC. | Traverse City | MI | — | ◐ LIKELY ACTIVE |
| NMNorthside Machining, INC | Huntingburg | IN | — | ◐ LIKELY ACTIVE |
| NSNorth Star Aerospace CORP | Yaphank | NY | — | ◐ LIKELY ACTIVE |
| NTNorth Texas Pressure Vessels, Inc. | Mineral Wells | TX | 20–99 | ◐ LIKELY ACTIVE |
| NPNorthwestern Plastics Limited | Burlington | IA | — | ◐ LIKELY ACTIVE |
| NSNorthwest Swiss, INC | Hayden | ID | — | ◐ LIKELY ACTIVE |
| NTNorthwest Technologies, Inc. - Oregon | Estacada | OR | 20–99 | ◐ LIKELY ACTIVE |
| NTNorthwest Technologies Texas | Fort Worth | TX | 1–19 | ◐ LIKELY ACTIVE |
| NINorthwood Industries, Inc. | Perrysburg | OH | 20–99 | ◐ LIKELY ACTIVE |
| NMNorthwoods Mfg Inc | Kingsford | MI | 20–99 | ◐ LIKELY ACTIVE |
| NMNorwich Machine shop | Norwich | KS | 1–19 | ◐ LIKELY ACTIVE |
| NSNo Sweat Service Group INC | Pottsville | PA | — | ◐ LIKELY ACTIVE |
| NMNotches Metalworks, LLC | Pageland | SC | — | ◐ LIKELY ACTIVE |
| NBNoTrax Bedford Park | Bedford Park | IL | 1–19 | ◐ LIKELY ACTIVE |
| NMNoTrax Moselle | Moselle | MS | 100–499 | ◐ LIKELY ACTIVE |
| NSNovak Supply LLC | Cleveland | OH | — | ◐ LIKELY ACTIVE |
Nova Metal Products INC dba Nova Manufacturing | Mentor | OH | 20–99 | ◐ LIKELY ACTIVE |
| NPNova Precision Products INC. | Rockaway | NJ | — | ◐ LIKELY ACTIVE |
| NINowak INC. | Wharton | NJ | — | ◐ LIKELY ACTIVE |
| NCNoytech CORP. | Sun Valley | CA | — | ◐ LIKELY ACTIVE |
| NDNRS DBA Lakeland Center Plant 2 | Lakeland | FL | 20–99 | ◐ LIKELY ACTIVE |
| NDNRS DBS Lakeland Center Plant 1 | Lakeland | FL | 20–99 | ◐ LIKELY ACTIVE |
| NWNuark Warehouse & Logistics | Blytheville | AR | 20–99 | ◐ LIKELY ACTIVE |
| NHNucor Harris Rebar Mid-Atlantic LLC (Baltimore Facility) | Baltimore | MD | 20–99 | ◐ LIKELY ACTIVE |
| NHNucor Harris Rebar Northeast LLC (Bethlehem Facility) | Bethlehem | PA | 20–99 | ◐ LIKELY ACTIVE |
| NHNucor Harris Rebar Northeast LLC (Canaan Facility) | Canaan | NH | 20–99 | ◐ LIKELY ACTIVE |
| NHNucor Harris Rebar Northeast LLC (Pawtucket Facility) | Pawtucket | RI | 20–99 | ◐ LIKELY ACTIVE |
| NHNucor Harris Rebar Northeast LLC (South Deerfield Facility) | South Deerfield | MA | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Midwest LLC Bourbonnais, Illinois | Bourbonnais | IL | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Midwest LLC Lansing, Michigan | Lansing | MI | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Midwest LLC Marion, Ohio | Marion | OH | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Midwest LLC Mooresville, Indiana | Mooresville | IN | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Midwest LLC - Newton Iowa | Newton | IA | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Midwest LLC - Roberts Wisonsin | Roberts | WI | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Midwest LLC Rockford, Illinois | Rockford | IL | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Midwest LLC - Sedalia Missouri | Sedalia | MO | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Midwest LLC - St. Louis Missouri | Saint Louis | MO | 1–19 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Services Center Corp | Fort Wayne | IN | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Southcentral LLC - Dallas Texas | Dallas | TX | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Southcentral LLC - Houston Texas | Dayton | TX | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Southcentral LLC - Jackson Mississippi | Flowood | MS | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Southcentral LLC - Jewett Texas | Jewett | TX | 20–99 | ◐ LIKELY ACTIVE |
| NRNucor Rebar Fabrication Southcentral LLC - Slidell Louisiana | Slidell | LA | 20–99 | ◐ LIKELY ACTIVE |
| NSNucor Skyline | Huger | SC | 20–99 | ◐ LIKELY ACTIVE |
| NTNucor Towers and Structures Indiana | New Ross | IN | 100–499 | ◐ LIKELY ACTIVE |
| NTNucor Towers & Structures Inc | West Hazleton | PA | 100–499 | ◐ LIKELY ACTIVE |
| NDNucor (Vulcraft Division) | Saint Joe | IN | 100–499 | ◐ LIKELY ACTIVE |
| NENuena Enterprises, LLC | Houston | TX | — | ◐ LIKELY ACTIVE |
| NLNukinbjones LLC | Dubois | PA | — | ◐ LIKELY ACTIVE |
| NINuno Iron & Mfg. Inc. | King City | CA | 20–99 | ◐ LIKELY ACTIVE |
| NLNuport LLC | Stanley | NC | 20–99 | ◐ LIKELY ACTIVE |
| NPNu-tech Precision Company LLC | Santa Ana | CA | — | ◐ LIKELY ACTIVE |
| NSNutech Steel INC | Ogden | UT | — | ◐ LIKELY ACTIVE |
| NLNuverde, LLC | Austin | TX | — | ◐ LIKELY ACTIVE |
| NFNuway Fab | Troy | IL | 1–19 | ◐ LIKELY ACTIVE |
| NSNVision Solutions, INC. | Diamondhead | MS | 20–99 | ◐ LIKELY ACTIVE |
| NFNydree Flooring - PA | Karthaus | PA | 20–99 | ◐ LIKELY ACTIVE |
| OSOberg Sarver - Metal Stamping Facility | Sarver | PA | 20–99 | ◐ LIKELY ACTIVE |
| OMO'Brien Metal Works | Clover | SC | 1–19 | ◐ LIKELY ACTIVE |
| OSO'Brien Steel Service- Congerville | Congerville | IL | 20–99 | ◐ LIKELY ACTIVE |
| OSO'Brien Steel Service- Lacon | Lacon | IL | 20–99 | ◐ LIKELY ACTIVE |
| OSO'Brien Steel Service-Minonk | Minonk | IL | 20–99 | ◐ LIKELY ACTIVE |
| OGObsessed Global LLC | Encino | CA | — | ◐ LIKELY ACTIVE |
| OIOcci, INC. | Fulton | MO | — | ◐ LIKELY ACTIVE |
| OIOcs Intellitrak | Fairfield | OH | 20–99 | ◐ LIKELY ACTIVE |
| OIOCTA Inc | Buckner | KY | 20–99 | ◐ LIKELY ACTIVE |
OEM Fabricators Inc. - Neillsville | Neillsville | WI | 20–99 | ◐ LIKELY ACTIVE |
OEM Fabricators Inc. - Phillips | Phillips | WI | 20–99 | ◐ LIKELY ACTIVE |