SSDU
| Acronym | Definition |
|---|---|
| SSDU | Session Layer Service Data Unit |
| SSDU | Session Service Data Unit |
| SSDU | Service, Security and Its Data Management Technologies in Ubi-Comp |
| SSDU | Semi-Submersible Drilling Unit |
| SSDU | Surgical Step Down Unit (hospital unit) |
| SSDU | Staff Support and Development Unit (University of Sydney; Australia) |