DTD
DTD stands for:
- Document Type Definition, see document type definition
- Desktop Tower Defense, a computer game
- Danube -Tisa -Danube Canal, a shipping channel system in the Serbian Vojvodina
- Darwin Digital Television, an Australian television station
- Data Transfer Device, a cryptographic device
- Dekoratie voor Trouwe service, a Medal of the South African Union Defence Force
- Delta Tau Delta, an American student organization
- Dust -to- Digital, a US-based record label
- Disambiguation
- Abbreviation