| CLSC | Contractor Logistic Support Commitment | 承包商后勤支持承诺 |
| CLSC | Chicago Lesbian Social Club | 芝加哥女同性恋社交俱乐部 |
| CLSC | Chautauqua Literary and Scientific Circle | 肖陶夸文学和科学圈 |
| CLSC | COMSEC Logistics Support Center | 通信安全后勤保障中心 |
| CLSC | Cisco LAN Switch Configuration | Cisco LAN交换机配置 |
| CLSC | Carter Lake Sailing Club (Larimer Country, CO, USA) | 卡特湖帆船俱乐部（美国科罗拉多州拉里默县） |
| CLSC | Classic Communications, Inc. | Classic Communications公司。 |
| CLSC | Centre Local de Services Communautaires | 地方公共服务中心 |
| CLSC | Concordia League Social Club | 康考迪亚联盟社交俱乐部 |