| US&R | Urban Search And Rescue 
| Others |
| USR | Slotted Rotors
| Others |
| USR | U.S. Robotics
| Others |
| USR | Ultimate Software Radio
| Others |
| USR | Understanding Strengthens Relationships
| Others |
| USR | Uniform Settlement Rule
| Others |
| USR | Unit Status Report
| Others |
| USR | Unitarian Society of Ridgewood
| Others |
| USR | United Sales Resources
| Others |
| USR | United Sniper Regiment
| Others |
| USR | United States Of Rajputana
| Others |
| USR | United States Racing
| Others |
| USR | United States Rangers
| Others |
| USR | United States Reserves
| Others |
| USR | Units Sold Report
| Others |
| USR | Universal Secure Registry
| Others |
| USR | Universal System Resource
| Others |
| USR | Universities Statistical Record
| Others |
| USR | Unix Directory Structure
| Others |
| USR | Unix Shared Resources
| Others |
| USR | Unix Software Resources
| Others |
| USR | Unix System Resources
| Others |
| USR | Upper Saddle River
| Others |
| USR | Upper Sugar River
| Others |
| USR | Urban School Ruhr
| Others |
| USR | Us Robotics
| Others |
| USR | User database ( Procomm Plus - Turbo C++ tour)
| Others |
| USR | User Service Request
| Others |
| USR | User Support Room
| Others |
| USR | USRobotics
| Others |
| USR | Utility Service Review
| Others |