| Warren Barr Orland Park IL | Healthcare & Social Assistance | 0 | — | A |
| Warren Barr South Loop IL | Healthcare & Social Assistance | 0 | — | F |
| Warren C. Sauers Co., Inc PA | Transportation & Warehousing | 0 | — | A |
| Warren Community Hospital MN | Healthcare & Social Assistance | 1 | $81,494 | A |
| Warren Consolidated Schools MI | Educational Services | 0 | — | F |
| Warren Construction & Roofing, Inc CA | Construction | 0 | — | F |
| Warren Construction Group ME | Construction | 0 | — | F |
| Warren County NC | Public Administration | 0 | — | A |
| Warren County Community Services, Inc. OH | Healthcare & Social Assistance | 0 | — | F |
| Warren County Concrete MO | Manufacturing | 0 | — | F |
| Warren County Government NC | Public Administration | 0 | — | A |
| Warren County Schools NC | Educational Services | 3 | $52,683 | — |
| Warren County Sheltered Workshop MO | Healthcare & Social Assistance | 0 | — | A |
| Warren County Water District KY | Utilities | 0 | — | F |
| Warren County, Tennessee Government TN | Educational Services | 0 | — | D |
| Warren Distributing Company NJ | — | 0 | — | — |
| Warren Economic Development Authority MN | Healthcare & Social Assistance | 0 | — | F |
| Warren Electric Cooperative, Inc. PA | Utilities | 0 | — | A |
| Warren Energy, LLC PA | Professional & Technical Services | 1 | $121,411 | — |
| Warren Fabricating & Machining Corp. OH | Manufacturing | 0 | — | F |
| Warren Farmers CO-OP TN | Wholesale Trade | 0 | — | F |
| Warren Farmers Coop TN | Wholesale Trade | 0 | — | A |
| WARREN FIRE PROTECTION DIST IL | Administrative & Waste Services | 0 | — | A |
| Warren General Hospital PA | Healthcare & Social Assistance | 0 | — | C |
| Warren Hills Nursing and Rehabilitation Center NC | Healthcare & Social Assistance | 0 | — | F |
| WARREN HOSPITAL NJ | — | 0 | — | — |
| Warren Industries, Inc. MI | Manufacturing | 0 | — | F |
| Warren Morgan Orchards, LLC WA | Agriculture & Forestry | 0 | — | F |
| Warren Oil AR | Manufacturing | 0 | — | A |
| warren oil IL | Manufacturing | 0 | — | A |
| Warren Oil Dunn NC NC | Manufacturing | 0 | — | A |
| Warren Oil San Antonio TX | Manufacturing | 0 | — | A |
| Warren Packaging Inc. CA | Manufacturing | 0 | — | A |
| Warren Park Health & Living IL | Healthcare & Social Assistance | 0 | — | A |
| Warren Paving Inc MS | Construction | 0 | — | A |
| Warren Pearce & Co., Inc FL | Transportation & Warehousing | 0 | — | A |
| Warren Power & Machinery Inc. OK | Wholesale Trade | 0 | — | A |
| Warren Power & Machinery Inc. TX | Manufacturing | 0 | — | C |
| Warren Power& Machinery Inc. TX | Wholesale Trade | 0 | — | A |
| Warren Roofing & Insulating Company OH | Construction | 0 | — | C |
| Warren Rupp, Inc. OH | Manufacturing | 0 | — | D |
| Warren Rural Electric Cooperative Corporation KY | Utilities | 0 | — | A |
| Warren Screw Products, Inc. MI | Manufacturing | 0 | — | A |
| Warren Sign Company Inc MO | Manufacturing | 0 | — | F |
| Warren Steel Holdings LLC OH | — | 0 | — | — |
| Warren Systems Inc MI | Construction | 0 | — | F |
| Warren Township Highway Department IL | Construction | 0 | — | F |
| Warren Trask Company MA | Wholesale Trade | 0 | — | B |
| Warren Village, Inc. CO | Healthcare & Social Assistance | 0 | — | A |
| Warren Washington Association for Mental Health NY | Healthcare & Social Assistance | 0 | — | A |
