| Union Cab of Madison Cooperative WI | Transportation & Warehousing | 0 | — | D |
| Union Carbide Corporation WV | Manufacturing | 0 | — | A |
| Union Casting Industries T/A Industrial Ferguson Foundry NJ | Manufacturing | 0 | — | A |
| Union Christel Manor, Inc. OH | Healthcare & Social Assistance | 0 | — | F |
| Union City Care Center OH | Healthcare & Social Assistance | 0 | — | A |
| Union City Chrysler Dodge Jeep Ram FIAT GA | Retail Trade | 0 | — | A |
| Union City Filament Corp. NJ | Manufacturing | 0 | — | A |
| Union City Non- Ferrous, Inc. OH | — | 0 | — | — |
| Union City Non-Ferrous, Inc. OH | — | 0 | — | — |
| Union City Urology TN | — | 0 | — | — |
| UNION CLUB OF THE CITY OF NEW YOK INC NY | Arts & Entertainment | 0 | — | F |
| Union CMS Financial Services LLC OK | Finance & Insurance | 0 | — | A |
| Union College KY | Educational Services | 0 | — | A |
| Union College NY | Educational Services | 2 | $79,335 | — |
| Union Concrete and Construction NY | Construction | 0 | — | F |
| Union Corrugating FL | Manufacturing | 0 | — | F |
| Union Corrugating CO TN | Manufacturing | 0 | — | F |
| Union Corrugating Company GA | Manufacturing | 0 | — | F |
| Union Corrugating Company NC | Manufacturing | 0 | — | A |
| Union County NJ | Healthcare & Social Assistance | 0 | — | D |
| Union County Board of Education NC | Public Administration | 1 | $55,710 | — |
| Union County Disabilities And Special Needs Board SC | Healthcare & Social Assistance | 0 | — | F |
| Union County Farm Bureau Cooperative Association Inc IN | Wholesale Trade | 0 | — | A |
| Union County Health and Rehab MS | Healthcare & Social Assistance | 0 | — | F |
| Union County Hospital IL | Healthcare & Social Assistance | 0 | — | F |
| UNION COUNTY HOSPITAL AUTHORITY GA | Healthcare & Social Assistance | 0 | — | F |
| Union County Public Schools NC | Transportation & Warehousing | 0 | — | A |
| Union County School District #1 OR | Educational Services | 0 | — | A |
| Union County Surgery Center NJ | Healthcare & Social Assistance | 0 | — | A |
| Union Dairy MN | Agriculture & Forestry | 0 | — | A |
| Union Electric Akers PA | — | 0 | — | — |
| UNION ELECTRIC CONTRACTING COMPANY PA | Construction | 0 | — | B |
| Union Electric Steel Corporation PA | Manufacturing | 0 | — | C |
| Union Engineering Company, Inc. CA | Construction | 0 | — | A |
| Union Fire Protection District IL | Public Administration | 0 | — | A |
| Union First Market Bank VA | — | 0 | — | — |
| Union for Reform Judaism NY | — | 0 | — | — |
| Union General Hospital, Inc. GA | Healthcare & Social Assistance | 7 | $46,711 | C |
| Union Gin Co Inc TN | Agriculture & Forestry | 0 | — | A |
| Union Glass Installations MA | Construction | 0 | — | F |
| Union Gospel Mission Twin Cities MN | Healthcare & Social Assistance | 0 | — | A |
| Union Hospital, Inc. IN | Healthcare & Social Assistance | 1 | $125,840 | — |
| Union Industrial Contractors, Inc. OH | Construction | 0 | — | A |
| Union Ink Company NJ | — | 0 | — | — |
| Union Leader Corporation NH | — | 0 | — | — |
| Union League Club of Chicago IL | — | 0 | — | — |
| Union LTC, Inc MS | Healthcare & Social Assistance | 0 | — | F |
| Union Maintenance Corporation NY | Manufacturing | 0 | — | F |
| Union Metal Corporation OH | — | 0 | — | — |
| Union Metal Industries Corporation OH | Manufacturing | 0 | — | F |
