| national beverage corp OH | Manufacturing | 0 | — | C |
| NATIONAL BEVERAGE CORP PA | Manufacturing | 0 | — | A |
| National Beverage Corp TN | Manufacturing | 0 | — | A |
| NATIONAL BEVERAGE CORP TX | Manufacturing | 0 | — | D |
| national beverage corp UT | Manufacturing | 0 | — | D |
| NATIONAL BEVERAGE CORP WA | Manufacturing | 0 | — | F |
| National Boiler Service, Inc. GA | Manufacturing | 0 | — | B |
| National Breaker Services, LLC CT | Manufacturing | 0 | — | A |
| National Bugmobiles TX | Agriculture & Forestry | 0 | — | A |
| National Builders Inc NV | Construction | 0 | — | F |
| National Bulk Equipment, Inc MI | Manufacturing | 0 | — | C |
| National Bureau of Economic Research, Inc. MA | Professional & Technical Services | 3 | $221,697 | — |
| National Business Furniture WI | Wholesale Trade | 0 | — | A |
| National Capital Legal Services VA | Professional & Technical Services | 3 | $95,604 | — |
| National Capital Treatment & Recovery VA | Healthcare & Social Assistance | 0 | — | A |
| National Car Rental CA | Real Estate | 0 | — | F |
| National Carbon Technologies, LLC MI | Manufacturing | 0 | — | F |
| National Cargo Bureau, Inc. NY | Transportation & Warehousing | 2 | $150,000 | — |
| National Carriers Inc TX | Transportation & Warehousing | 0 | — | A |
| National Carriers, Inc KS | Transportation & Warehousing | 0 | — | C |
| National Carriers, Inc. CA | — | 0 | — | — |
| National Cart Co. East, LLC PA | Manufacturing | 0 | — | A |
| National Cart Company MO | Manufacturing | 0 | — | B |
| National Carwash Solutions CA | Manufacturing | 0 | — | A |
| National Carwash Solutions IA | Manufacturing | 0 | — | C |
| National Carwash Solutions IL | Manufacturing | 0 | — | F |
| National Carwash Solutions MI | Manufacturing | 0 | — | F |
| National Carwash Solutions NC | Manufacturing | 0 | — | A |
| National Carwash Solutions WI | Manufacturing | 0 | — | A |
| National Carwash Solutions WY | Manufacturing | 0 | — | F |
| National Cement Company of California, Inc. CA | Manufacturing | 1 | $106,912 | — |
| National Center for International Schools CA | Real Estate | 0 | — | A |
| National Centers on Institutions and Alternatives MD | Healthcare & Social Assistance | 0 | — | F |
| National Charitable Services MA | Finance & Insurance | 4 | $109,658 | — |
| National Charitable Services d/b/a Fidelity Investments MA | Finance & Insurance | 1 | $127,878 | — |
| National Charitable Services LLC d/b/a Fidelity Investments MA | Finance & Insurance | 10 | $117,331 | — |
| National Checking Co. MN | Manufacturing | 0 | — | D |
| National Chemical Laboratories, Inc. PA | Manufacturing | 0 | — | D |
| National Children's Museum DC | Arts & Entertainment | 0 | — | A |
| National Church Residences FL | Healthcare & Social Assistance | 0 | — | F |
| National Church Residences MD | Healthcare & Social Assistance | 0 | — | A |
| National Church Residences OH | Healthcare & Social Assistance | 0 | — | D |
| National Circuit Assembly TX | Manufacturing | 0 | — | A |
| National Coating and Supplies NC | Wholesale Trade | 0 | — | A |
| National Coating and Supplies PA | Wholesale Trade | 0 | — | A |
| National Coating and Supplies TN | Wholesale Trade | 0 | — | C |
| National Coating and Supplies UT | Wholesale Trade | 0 | — | A |
| National Coating Corporation MA | Manufacturing | 0 | — | B |
| National Coatings and Supplies/Single Source Inc. GA | Wholesale Trade | 0 | — | A |
| National Cold Storage KS | Transportation & Warehousing | 0 | — | A |
