| CALC | Cambridgeshire Association of Local Councils | 剑桥郡地方议会协会 |
| CALC | Calculation | 计算 |
| CALC | Calculator | 计算器 |
| CALC | Calculus | 微积分 |
| CALC | Cryptography and Lattices Conference | 密码学与晶格会议 |
| CALC | Computational Approaches to Linguistic Creativity (Workshop) | 语言创造力的计算方法（工作坊） |
| CALC | Can Anyone Like Calculus? | 有人会喜欢微积分吗？ |
| CALC | Calculate | 计算 |
| CALC | Customer Access Line Charge | 客户接入线费用 |
| CALC | Calculated | 计算 |
| CALC | Cargo Acceptance & Load Control | 货物验收和负荷控制 |
| CALC | Clergy And Laity Concerned | 神职人员和相关人员 |
| CALC | Community Alliance of Lane County (Eugene, OR) | 莱恩县社区联盟（俄勒冈州尤金） |
| CALC | Carrier Access Line Charge | 运营商接入线费用 |
| CALC | California Coastal Communications | 加利福尼亚海岸通信 |
| CALC | Caring About Limestone Community | 关心石灰石社区 |