| EMSA | European Maritime Safety Agency | 欧洲海事数据模型产品交换标准协会 |
| EMSA | European Marine STEP (Standard for the Exchange of Product Model Data) Association | 欧洲海洋STEP（产品模型数据交换标准）协会 |
| EMSA | European Medical Students Association | 欧洲医学生协会 |
| EMSA | Egyptian Medical Students Association | 埃及医学生协会 |
| EMSA | Emergency Medicine Student Association | 急诊医学学生协会 |
| EMSA | Eagle Mountain Soccer Association | 鹰山足球协会 |
| EMSA | Electrophoretic Gel Mobility Shift Assay | 电泳凝胶迁移率变化测定 |
| EMSA | Electrophoretic Mobility Shift Assay (molecular biology) | 电泳迁移率转移测定（分子生物学） |
| EMSA | Emergency Medical Services Alliance, Inc. | 紧急医疗服务联盟。 |
| EMSA | Emergency Medical Services Authority (California) | 紧急医疗服务管理局（加利福尼亚州） |
| EMSA | Emergency Medical Services Appropriation | 紧急医疗服务拨款 |
| EMSA | Electron Microscope Society of America | 美国电子显微镜学会 |
| EMSA | Seaman Apprentice, Electrician's Mate Striker (Naval Rating) | 西曼学徒,电工的伴侣射手(海军等级) |
| EMSA | European Medical Students' Association | 欧洲的医疗学生会 |
| EMSA | Emergency Medical Services Authority | 紧急医疗服务管理局 |
| EMSA | Emergency Medical Services Agency | 紧急医疗服务机构 |