| MUSA | Mathematics Undergraduate Student Association | 数学本科生协会 |
| MUSA | Music Undergraduate Students Association | 音乐本科学生协会 |
| MUSA | The Massey University Students Association | 梅西大学学生协会 |
| MUSA | Maglev Urban System Associates | 磁悬浮城市系统协会 |
| MUSA | Monash University Students Association (Malaysia) | 莫纳什大学学生协会（马来西亚） |
| MUSA | Metropolitan Urban Service Area | 大都会城市服务区 |
| MUSA | Multiple Unit Steerable Antenna | 多单元可转向天线 |
| MUSA | Municipal Urban Service Area | 市政城市服务区 |
| MUSA | Marketing University Summer Accommodation | 市场营销大学暑期住宿 |
| MUSA | Seaman Apprentice, Musician Striker (Naval Rating) | 海员学徒、音乐家（海军等级） |