| ICSA | International Computer Security Association | 国际计算机安全协会 |
| ICSA | Irish Cattle & Sheep Farmers' Association (UK) | 爱尔兰的牛羊、农民协会(英国) |
| ICSA | Intercollegiate Sailing Association | 校际帆船协会 |
| ICSA | International Cultic Studies Association | 国际文化研究协会 |
| ICSA | International Customer Service Association | 国际客户服务协会 |
| ICSA | Institute of Chartered Secretaries and Administrators | 特许秘书和行政人员协会 |
| ICSA | International Chain Salon Association | 国际连锁沙龙协会 |
| ICSA | International Conference on Systolic Arrays | 收缩阵列国际会议 |
| ICSA | Inductively-Coupled Slot Antenna | 电感耦合缝隙天线 |
| ICSA | Internet Cellular Smart Access | 互联网蜂窝智能接入 |
| ICSA | islet-cell-surface antibldy | 胰岛细胞表面抗体 |