| National Frozen Foods WA | Agriculture & Forestry | 0 | - | F |
| National Frozen Foods Corporation OR | Manufacturing | 0 | - | F |
| National Fruit Product Company VA | Manufacturing | 0 | - | D |
| National Fuel Gas Dist. Corp. NY | Utilities | 0 | - | F |
| National Fuel Gas Dist. Corp. PA | Utilities | 0 | - | F |
| National Fulfillment Services, LLC PA | - | 0 | - | - |
| National Funding, Inc. CA | Finance & Insurance | 3 | $106,723 | - |
| National Futures Association IL | Public Administration | 1 | $113,000 | - |
| National General Management Corp LA | - | 0 | - | - |
| National General Management Corp NC | Finance & Insurance | 4 | $120,963 | - |
| National General Management Corp. CA | - | 0 | - | - |
| National Geographic Partners, LLC CA | Information & Media | 1 | $181,612 | - |
| National Government Services, Inc. IN | Finance & Insurance | 9 | $116,660 | - |
| National Grid Renewables Development, LLC MN | Utilities | 5 | $147,544 | B |
| National Grid USA Service Company, INC. MA | Utilities | 15 | $136,353 | - |
| National Guard Products INC TN | Other Services | 0 | - | C |
| National Healing Corporation FL | - | 0 | - | - |
| National Health Care CT | Healthcare & Social Assistance | 0 | - | - |
| National Health Care Associates CT | Healthcare & Social Assistance | 0 | - | - |
| National Health Corporation TN | Healthcare & Social Assistance | 0 | - | F |
| National Healthcare CT | Healthcare & Social Assistance | 0 | - | A |
| National Healthcare Associate NY | Healthcare & Social Assistance | 0 | - | F |
| National Healthcare Associates CT | Healthcare & Social Assistance | 0 | - | F |
| National Healthcare Associates ME | Healthcare & Social Assistance | 0 | - | F |
| National Healthcare Associates NH | Healthcare & Social Assistance | 0 | - | F |
| National Healthcare Corp AL | Healthcare & Social Assistance | 0 | - | - |
| National Healthcare Corporation KY | Healthcare & Social Assistance | 0 | - | F |
| National HealthCare Corporation MO | Healthcare & Social Assistance | 0 | - | F |
| National Healthcare Corporation SC | Healthcare & Social Assistance | 0 | - | F |
| National Healthcare Corporation TN | Healthcare & Social Assistance | 0 | - | F |
| National HealthCare Corporation VA | Healthcare & Social Assistance | 0 | - | F |
| National Healthcare of Mt. Vernon d/b/a Crossroads Community Hospital IL | Healthcare & Social Assistance | 0 | - | F |
| National Healthcare Professionals LLC IL | Administrative & Waste Services | 1 | $95,000 | - |
| National Healthcare Solutions, Inc. TX | Finance & Insurance | 1 | $89,190 | - |
| National Healthcare/Cool Springs TN | Healthcare & Social Assistance | 0 | - | F |
| National Heritage Academies MI | Educational Services | 0 | - | A |
| National Hispanic Medical Association DC | Other Services | 1 | $80,850 | - |
| National Hospitalist Services, PC LA | Administrative & Waste Services | 17 | $222,328 | - |
| National Housing Trust DC | Professional & Technical Services | 1 | $98,800 | - |
| National Hybrid, Inc. NY | - | 0 | - | - |
| National Indemnity Company NE | Finance & Insurance | 3 | $106,311 | - |
| National Information Solutions Cooperative ND | Professional & Technical Services | 3 | $82,961 | - |
| National Institute of Aerospace VA | - | 0 | - | - |
| National Institute of Aerospace Associates VA | Professional & Technical Services | 2 | $102,606 | - |
| National Institutes of Health, HHS MD | Professional & Technical Services | 138 | $110,372 | - |
| National Instruments Corporation TX | Professional & Technical Services | 10 | $151,988 | - |
| National Jewish Health CO | Healthcare & Social Assistance | 1 | $70,000 | C |
| National labor strategies NJ | Administrative & Waste Services | 0 | - | F |
| National Liability & Fire Insurance Company CT | Finance & Insurance | 1 | - | - |
| National Life Insurance Company VT | Finance & Insurance | 9 | $151,833 | - |