| Northern Metal Fab WI | Manufacturing | 0 | — | F |
| Northern Metal Recycling 2019 MN | — | 0 | — | — |
| Northern Metal Recycling American Iron MN | Wholesale Trade | 0 | — | F |
| Northern Metal Recycling Great Western MN | Wholesale Trade | 0 | — | B |
| Northern Metal Recycling Phillips MN | Wholesale Trade | 0 | — | A |
| Northern Metal Recycling Toys Scrap Eau Claire WI | Wholesale Trade | 0 | — | C |
| Northern Metals LLC Metro Metals LLC MN | Wholesale Trade | 0 | — | F |
| Northern Michigan Glass MI | Construction | 0 | — | F |
| Northern Michigan University MI | Educational Services | 3 | $91,269 | — |
| Northern Montana Health Care, Inc. MT | Healthcare & Social Assistance | 3 | $239,403 | — |
| Northern Montana Hospital MT | Healthcare & Social Assistance | 0 | — | C |
| Northern Mountain Constructors, Inc. NM | Construction | 0 | — | F |
| Northern Natural Gas Company NE | Transportation & Warehousing | 4 | $120,320 | — |
| Northern Neck Senior Care Community VA | Healthcare & Social Assistance | 0 | — | F |
| Northern Nurseries, Inc CT | Wholesale Trade | 0 | — | A |
| Northern Oaks TX | Healthcare & Social Assistance | 0 | — | F |
| Northern Ohio Medical Specialist OH | Healthcare & Social Assistance | 0 | — | F |
| northern ohio roofing and sheet metal, inc OH | Construction | 0 | — | A |
| Northern Orchard Co., Inc. NY | Agriculture & Forestry | 0 | — | B |
| Northern Outdoors Inc ME | Accommodation & Food Services | 0 | — | F |
| Northern Oxford Regional Ambulance DBA Med-Care Ambulance Service ME | Healthcare & Social Assistance | 0 | — | F |
| Northern Pacific Airways Inc AK | Transportation & Warehousing | 0 | — | A |
| Northern Pipe Products Inc ND | Manufacturing | 0 | — | D |
| Northern Plains Electric ND | Utilities | 0 | — | F |
| Northern Plains Electric Cooperative ND | Utilities | 0 | — | F |
| Northern Plains Heating & Air Conditioning, Inc. ND | Construction | 0 | — | A |
| Northern Power Construction Energy Services AK | Construction | 0 | — | A |
| Northern Powerline Construction AK | Construction | 0 | — | A |
| Northern Powerline Constructors, Inc. AK | Construction | 0 | — | A |
| Northern Prairie Polymers, LLC dba Industrial Molded Rubber Products MN | Manufacturing | 0 | — | F |
| Northern Precision Plastics IL | Manufacturing | 0 | — | A |
| Northern Pride Inc. MN | Manufacturing | 0 | — | B |
| Northern Products Company IL | Wholesale Trade | 0 | — | A |
| Northern Refrigerated Transportation CA | Transportation & Warehousing | 0 | — | C |
| Northern Regional Jail & Correctional Facility WV | Public Administration | 0 | — | F |
| Northern Resources Cooperative MN | Wholesale Trade | 0 | — | A |
| NORTHERN RIVERS FAMILY SERVICES INCORPORATED NY | Healthcare & Social Assistance | 0 | — | A |
| Northern Safety Company, Inc GA | Wholesale Trade | 0 | — | A |
| Northern Safety Company, Inc KY | Wholesale Trade | 0 | — | A |
| Northern Safety Company, Inc NY | Wholesale Trade | 0 | — | B |
| Northern Safety Company, Inc TN | Wholesale Trade | 0 | — | A |
| Northern Safety Company, Inc TX | Wholesale Trade | 0 | — | A |
| Northern Safety Company, Inc. CO | Wholesale Trade | 0 | — | F |
| Northern Safety Company, Inc. MO | Wholesale Trade | 0 | — | A |
| NORTHERN SALES COMPANY INC AK | Wholesale Trade | 0 | — | F |
| NORTHERN SALES COMPANY INC WA | Wholesale Trade | 0 | — | A |
| Northern Staffing Services MI | Administrative & Waste Services | 0 | — | F |
| Northern Stainless Corp. WI | Manufacturing | 0 | — | A |
| Northern Stamping OH | Manufacturing | 0 | — | F |
| Northern Star (POGO) LLC AK | Mining & Extraction | 1 | $236,808 | — |
