Encyclopedias, Almanacs, Transcripts, and Maps
- Douglas, Archibald, 8th earl of Angus
- Douglas, David
- Douglas, John Sholto
- Douglas, Marjory Stoneman
- Douglas, Sir Howard
- Douglas, Sir James de, lord of Douglas
- Dounreay
- Doura
- douroucouli
- Douw, Gerard
- dovekie
- Dover, Strait of
- Dovrefjell
- Dovzhenko, Aleksandr
- Dow, Gerard
- Dow, Lorenzo
- dowitcher
- Downers Grove
- Downey
- Downs, North, and South Downs