URIs
| Acronym | Definition |
|---|---|
| URIs | upper respiratory tract infections |
| URIs | Underwater Robotic Intelligent System (marine technology) |
| URIs | Unions Régionales des Ingénieurs et Scientifiques (French: Regional Union of Engineers and Scientists) |
| URIs | Umwelt Rechts Informations System (German: Environmental Law Information System; database) |