| MDSO | Mentally Disordered Sex Offender | 精神障碍性罪犯 |
| MDSO | Multi-Domain Sign-On | 多域登录 |
| MDSO | Medical Discount Solutions of Oklahoma | 俄克拉荷马州医疗折扣解决方案 |
| MDSO | Miss Delaware Scholarship Organization | 特拉华州小姐奖学金组织 |
| MDSO | Multi Disciplined Security Officer | 多学科安保人员 |
| MDSO | Medical Dental Staff Office | 牙科医务人员办公室 |
| MDSO | Million Dollar Shoot-Out | 百万美元枪战 |
| MDSO | Millikin Decatur Symphony Orchestra | Millikin Decatur交响乐团 |