sort by Rank | Alpha
| Possible Meanings | Rank |
| Ulster Savings Charitable Foundation | ** |
| United States Chess Foundation | ** |
| United States Chanbara Federation | ** |
| Universal Service Compensation Fund | ** |
| United States Cycling Foundation | ** |
| Unity Service Cooperation Foundation | * |
| United States Cryobanks of Florida | * |
| United States Commonwealth Fund | * |
| United States Coal Fiatt | * |