SDDT
| Acronym | Definition |
|---|---|
| SDDT | San Diego Daily Transcript (newspaper; San Diego, CA) |
| SDDT | Step Draw-Down Test (oil exploration) |
| SDDT | San Diego Dance Theater (San Diego, CA) |
| SDDT | South Devon Diesel Traction (Buckfastleigh, Devon, England, UK) |
| SDDT | Supplemental Descriptive Data Table |
| SDDT | Short-Duration Dithranol Therapy (psoriasis therapy) |