MDSO
| Acronym | Definition |
|---|---|
| MDSO | Mentally Disordered Sex Offender |
| MDSO | Millikin-Decatur Symphony Orchestra (Illinois) |
| MDSO | Maryland Special Olympics |
| MDSO | Million Dollar Shoot Out (World Golf League) |
| MDSO | Medical Device Standards Order (Australia) |
| MDSO | Multi-Domain Sign-On |