| USIS | The University Of Sussex Information Service 
| Others |
| USIS | U S Investigations Services
| Others |
| USIS | Ugandan Schools Information Service
| Others |
| USIS | Ultrasonic Passenger Compartment Sensor
| Others |
| USIS | Unique Student Identifier System
| Others |
| USIS | United States Imagery System
| Others |
| USIS | United States Immigration Service
| Others |
| USIS | United States Immigration Station
| Others |
| USIS | United States Information Service
| Others |
| USIS | United States Investigation Service
| Others |
| USIS | United States Investigations Services
| Others |
| USIS | United States Investigative Services
| Others |
| USIS | Universal Space Interface Standard
| Others |
| USIS | University Studies Informational System
| Others |