| NPNelson Precision, LLC | Mckinney | TX | — | ◐ LIKELY ACTIVE |
| NMNest Mfg INC | Melrose | MA | — | ◐ LIKELY ACTIVE |
| NSNever Sweat Services LLC | Belt | MT | — | ◐ LIKELY ACTIVE |
| NANew Age | Plattsmouth | NE | 20–99 | ◐ LIKELY ACTIVE |
| NANew Age Manufacturing, INC. | Plattsmouth | NE | — | ◐ LIKELY ACTIVE |
| NANew Albany | New Albany | IN | 1–19 | ◐ LIKELY ACTIVE |
| NANew Albany, IN | New Albany | IN | 20–99 | ◐ LIKELY ACTIVE |
| NDNew Development Manufacturing LLC | Toms River | NJ | — | ◐ LIKELY ACTIVE |
| NFNew Flyer America | Jamestown | NY | 100–499 | ◐ LIKELY ACTIVE |
| NIN.E.W. Industries | Sturgeon Bay | WI | 100–499 | ◐ LIKELY ACTIVE |
| NMNew Mexico Metal Plating | Albuquerque | NM | 1–19 | ◐ LIKELY ACTIVE |
| NMNEW MEXICO RIE Coatings | Albuqueque | NM | 20–99 | ◐ LIKELY ACTIVE |
| NMNew Millennium Building Systems, LLC. - Columbia | Columbia | SC | 20–99 | ◐ LIKELY ACTIVE |
| NMNew Millennium Building Systems, LLC. - Fallon | Fallon | NV | 100–499 | ◐ LIKELY ACTIVE |
| NMNew Millennium Building Systems, LLC. - Northwest Arkansas Engineering | Rogers | AR | 20–99 | ◐ LIKELY ACTIVE |
| NMNewtek Manufacturing, Incorporated | Rockledge | FL | — | ◐ LIKELY ACTIVE |
| NTNew Trend Manufacturing LLC | Harper | KS | — | ▲ REPORTED CLOSED |
| NCNewturn Contracting, LLC | Scottsboro | AL | — | ◐ LIKELY ACTIVE |
| NSNF String & Son Inc hop | York Haven | PA | 1–19 | ◐ LIKELY ACTIVE |
| NMN.H. Machining, Inc. | Waukesha | WI | 20–99 | ◐ LIKELY ACTIVE |
| NTNiantic Tool, INC. | Niantic | CT | — | ◐ LIKELY ACTIVE |
| NNiles | Niles | OH | 20–99 | ◐ LIKELY ACTIVE |
| NBNiles Building Products Company - Florida | Jacksonville | FL | 20–99 | ◐ LIKELY ACTIVE |
| NBNiles Building Products Company - Ohio | Niles | OH | 1–19 | ◐ LIKELY ACTIVE |
| NBNiles Building Products Company - Texas | Grand Prairie | TX | 1–19 | ◐ LIKELY ACTIVE |
| NSNimsgern Steel Corp. | Minocqua | WI | 20–99 | ◐ LIKELY ACTIVE |
| NINipco Inc - Nickel-Hobbs | Hobbs | NM | 1–19 | ◐ LIKELY ACTIVE |
| NINipco Inc - Odessa | Odessa | TX | 1–19 | ◐ LIKELY ACTIVE |
| NINipco Inc - Plastic Hobbs | Hobbs | NM | 1–19 | ◐ LIKELY ACTIVE |
| NSNipha Superior Manufacturing LLC | Munford | AL | 20–99 | ◐ LIKELY ACTIVE |
| NLNitren LLC | Lakeland | FL | — | ◐ LIKELY ACTIVE |
| NCNitro Cutting Services, LLC | Manheim | PA | 1–19 | ◐ LIKELY ACTIVE |
| NINix Industrial - Fairfield, OH | Farifield | OH | 1–19 | ◐ LIKELY ACTIVE |
| NINix Industrial - Frontage Road | Poseyville | IN | 20–99 | ◐ LIKELY ACTIVE |
| NINix Industrial - Main Street | Poseyville | IN | 20–99 | ◐ LIKELY ACTIVE |
| NINix Industrial - Rockport, IN | Rockport | IN | 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 |
| 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 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 |
| NCNorth Charleston Manufacturing Plant | North Charleston | SC | 100–499 | ◐ LIKELY ACTIVE |
| NNorthchase | Houston | TX | 100–499 | ◐ LIKELY ACTIVE |
| NMNorther Metal Fab | Baldwin | WI | 20–99 | ◐ LIKELY ACTIVE |
| NNorthern | Indianapolis | IN | 100–499 | ◐ 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 |
| NPNorthland Precision, INC. | Traverse City | MI | — | ◐ LIKELY ACTIVE |
| NMNorth Miami | North Miami | FL | 100–499 | ◐ 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 |
| 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 |
| 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 |