| Acronym | Definition |
|---|
| USIS➣United States Information Service |
| USIS➣United States Immigration Service |
| USIS➣United Societies in Space (Colorado) |
| USIS➣User-to-User Indicator (Signaling System #7) |
| USIS➣United States Imagery System |
| USIS➣United States Investigations Services |
| USIS➣Ugandan Schools Information Service |