DDO
DDO stands for:
- David Dunlap Observatory Catalog, a catalog of dwarf galaxies of the David Dunlap Observatory
- Deputy Director for Operations, former designation of the head of secret operations within the Central Intelligence Agency (today: Director of the National Clandestine Service)
- German disc jockey organization , company founded in 1963
- German Druid Order , association founded in 1872
- Dimethyldioxirane , a chemical compound
- Distant Detached Objects , Trans-Neptunian objects with special properties, see Trans-Neptunian object #Detached Objects
- Dollard-des-Ormeaux , Canadian city in Quebec
- Dungeons and Dragons online , an online computer game
ddo stands for:
- Tsesian language (ISO-639-3 code), Northeast Caucasian language in southwest Dagestan
ddo. stands for:
- de dato, from the date
See also:
- Longest-serving German officer / German part of 1st NATO Signal Battalion (DDO / DtA 1st NSB Wesel)
