| CLAR | Channel Local Address Register | 信道本地地址寄存器 |
| CLAR | Communications Loading Analysis Report | 通信负载分析报告 |
| CLAR | Clarion Technologies | Clarion Technologies公司 |
| CLAR | Clarify | 澄清 |
| CLAR | Conker Live and Reloaded (gaming) | Conker Live和Reloaded（游戏） |
| CLAR | Custom Location Alternate Routing | 自定义位置备用路由 |
| CLAR | Central Laboratory for Aquaculture Research | 水产养殖研究中心实验室 |
| CLAR | Centre for Latin American Research | 拉丁美洲研究中心 |
| CLAR | Crude Liquid Argon | 粗液态氩 |