| ISMA | Idle Signal Multiple Access | 空闲信号多址 |
| ISMA | International Ship Managers Association | 国际船舶管理协会 |
| ISMA | International Securities Market Association | 国际证券市场协会 |
| ISMA | International Snowmobile Manufacturer's Association | 制造商协会国际雪山 |
| ISMA | International Ship Masters' Association | 国际船舶大师的协会 |
| ISMA | International Sports Medicine Association | 国际运动医学协会 |
| ISMA | Integrated Service Management Architecture (Sprint) | 集成服务管理架构（Sprint） |
| ISMA | Inhibit Sense Multiple Access (Transmission Protocol) | 禁止侦听多路访问（传输协议） |
| ISMA | Internet Streaming Media Alliance | 互联网流媒体联盟 |
| ISMA | ISC Management Activity | ISC管理活动 |
| ISMA | Improved Satellite Multi-Channel Antenna | 改进的卫星多信道天线 |
| ISMA | International Symposium on Mechatronics and its Applications (IEEE) | 机电一体化及其应用国际研讨会（IEEE） |
| ISMA | Information Systems Management Activity | 信息系统管理处 |
| ISMA | International Students Meetingpoint Amsterdam | 阿姆斯特丹国际学生会议中心 |
| ISMA | Information Systems Management Activity/Agency | 信息系统管理活动/机构 |