PDDT
| Acronym | Definition |
|---|---|
| PDDT | Plano Diretor de Transportes (Portuguese: Transportation Master Plan; Brazil) |
| PDDT | Port Douglas Daintree Tourism (Australia) |
| PDDT | Pattern Disruption Defensive Tactics (self-defense) |
| PDDT | Pulmonary-Ductus Descending Aorta Trunk |