sort by Rank | Alpha
| Possible Meanings | Rank |
| U S Marshals Service | **** |
| U S Maritime Service | *** |
| United States Marshal Service | *** |
| U S MASTERS SWIMMING | *** |
| U S Merchant Services | *** |
| United States Master Swimming | ** |
| Union Square Main Streets | ** |
| United States Measurement System | ** |
| United States Marshall Service | ** |
| University School of Management Studies | ** |
| U S Measurement System | ** |
| United States Master Swimmers | ** |
| US-trained medical students | ** |
| United States Merchant Service | ** |
| Unified Stream Manager System | ** |
| Universal Switch Mounting System | ** |
| United States Master S | ** |
| Universelles Schalter Montage System | ** |
| United State Masters Swimming | * |
| United States Masters Swimmers | * |
| United States Merchant Systems | * |
| User Services Management System | * |
| U S Mammography Solutions | * |
| United States Modified Series | * |
| University Space Management System | * |
| United States Marshalls Service | * |
| United States Mint Server | * |