URN
| Acronym | Definition |
|---|---|
| URN | Uniform Resource Name |
| URN | Unique Reference Number |
| URN | User Registration Number |
| URN | Universal Resource Name |
| URN | University Radio Nottingham (UK) |
| URN | User Requirements Notation |
| URN | Unternehmensgesellschaft Verkehrsverbund Rhein-Neckar GmbH (German) |
| URN | Unit Reference Number |
| URN | Uniform Regional Spring Wheat Nursery |
| URN | Université de Rouyn-Noranda (French; Québec, Canada) |