| National Resilience Inc. FL | Manufacturing | 0 | — | A |
| National Resilience, INC OH | Manufacturing | 0 | — | A |
| National Resilience, Inc., f/k/n Resilience US Inc MA | Manufacturing | 0 | — | B |
| National Resource Management, INC MA | Professional & Technical Services | 0 | — | F |
| National Restoration Systems, Inc. IL | Construction | 0 | — | A |
| National Retail Transportation, Inc. CA | — | 0 | — | — |
| National Roofing & Sheet Metal Co., Inc. MI | Construction | 0 | — | A |
| NATIONAL RUBBER CORPORATION PA | Manufacturing | 1 | $81,869 | — |
| National Rural Electric Cooperative Association VA | Other Services | 1 | $134,992 | — |
| National Rural Telecommunications Cooperative VA | Information & Media | 0 | — | A |
| National Rural Utilities Cooperative Finance Corporation VA | Finance & Insurance | 0 | — | A |
| National Safety Apparel KS | — | 0 | — | — |
| National Safety Apparel OH | Manufacturing | 1 | $69,768 | B |
| National Safety Apparel Inc. AR | Manufacturing | 0 | — | A |
| National Safety Apparel Inc. CA | Manufacturing | 0 | — | F |
| National Safety Apparel Inc. IL | Manufacturing | 0 | — | C |
| National Safety Apparel Inc. TX | Manufacturing | 0 | — | D |
| National Sales Corp. CA | Wholesale Trade | 0 | — | C |
| National Salvage and Service Corporation IN | Construction | 0 | — | A |
| National Seating & Mobility, Inc. TN | — | 0 | — | — |
| National Security Group AL | Finance & Insurance | 0 | — | A |
| National Security Works, Inc. CA | Construction | 0 | — | A |
| National September 11 Memorial & Museum NY | — | 0 | — | — |
| National Service Alliance TX | Manufacturing | 0 | — | F |
| National Services, Inc. MO | Construction | 0 | — | A |
| National Sign & Marketing Corporation CA | Manufacturing | 0 | — | F |
| National Sign Corporation CT | Manufacturing | 0 | — | F |
| National Signal CA | Manufacturing | 0 | — | F |
| NATIONAL SOFT SYSTEMS INC. AR | Professional & Technical Services | 2 | $76,783 | — |
| National Solar Service LLC IL | Construction | 0 | — | A |
| National Solar Service LLC MI | Construction | 0 | — | F |
| National Specialty Alloys Inc TX | Wholesale Trade | 0 | — | A |
| National Spinning Co. Inc. NC | — | 0 | — | — |
| National Standard Parts Associates, Inc. FL | Manufacturing | 0 | — | F |
| National Standard, LLC MI | Manufacturing | 0 | — | F |
| National Steak Processors LLC OK | Manufacturing | 0 | — | C |
| National Steel and Shipbuilding Company CA | Manufacturing | 1 | $163,250 | — |
| National Steel City LLC. MI | Construction | 0 | — | A |
| National Strand TX | Manufacturing | 0 | — | F |
| National Strand Products, LP TX | Manufacturing | 0 | — | F |
| National Strategic Transport, LLC TN | Transportation & Warehousing | 0 | — | A |
| NATIONAL STRUCTURES, INC FL | Construction | 0 | — | F |
| National Student Clearinghouse VA | Educational Services | 2 | $175,990 | — |
| National Systems America L.P. TX | Professional & Technical Services | 2 | $105,997 | — |
| National Taxpayers Union Foundation DC | Other Services | 1 | $118,310 | — |
| National Technologies, Inc. WI | Manufacturing | 0 | — | F |
| National Technology Integrators, LLC MD | Construction | 0 | — | A |
| National Technology, Inc. IL | Manufacturing | 0 | — | F |
| National Terrazzo Tile & Marble Inc TX | Construction | 0 | — | A |
| National Test Pilot School CA | Educational Services | 1 | $180,000 | — |
