| 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 |