| URN | Uniform Resource Name | 统一资源命名 |
| URN | Uniform Regional Spring Wheat Nursery | 统一区域春小麦苗圃 |
| URN | Unit Reference Number | 单位参考号 |
| URN | Unternehmensgesellschaft Verkehrsverbund Rhein-Neckar GmbH (German) | Unternehmensgesellschaft Verkehrsverbund Rhein Neckar GmbH（德国） |
| URN | University Radio Nottingham (UK) | 诺丁汉大学广播电台（英国） |
| URN | University Radio Nottingham | 诺丁汉大学广播电台 |
| URN | Unique Reference Number | 唯一参考号 |
| URN | Ultimate Read News | 终极阅读新闻 |
| URN | Universal Resource Number | 通用资源编号 |
| URN | User Requirements Notation | 用户需求符号 |
| URN | UniversitÉ de Rouyn-Noranda (French; QuÉbec, Canada) | UniversitÉ de Rouyn-Noranda (French; QuÉbec, Canada) |
| URN | Update Relationship Name | 更新关系名称 |
| URN | Union Resources Network | 联合资源网 |
| URN | Universal Resource Name | 通用资源名称 |