DDN
DDN stands for:
- The demographic network
- Dayton Daily News , daily newspaper in Dayton, Ohio
- Defense Data Network
- Delta Downs (IATA code for the airport in Queensland, Australia)
- Diaconal employers' association Lower Saxony
- Digital data network
- Digital Divide Network
ddn stands for:
- Dendi (ISO-639-3 code), a Songhai language spoken in Benin and Nigeria
