- deanA senior official in a college or university, who may be in charge of a division or faculty (for example, the dean of science) or have some other advisory or disciplinary function (for example, the dean of students).
- DaneA person from Denmark or of Danish descent.
- DanburyA village and civil parish in the City of Chelmsford district, Essex, England (OS grid ref TL7805).
- DenbyA village and civil parish in Amber Valley district, Derbyshire, England (OS grid ref SK3946).
- DenhamA large village and civil parish in Buckinghamshire, England, previously in South Bucks district (OS grid ref TQ0486).
- deneA valley, especially the deep valley of a stream or rivulet.
- DanbyA village and civil parish (served by Danby Group Parish Council) in North Yorkshire, England, previously in Scarborough district (OS grid ref NZ7008).
- DenholmA village in the Scottish Borders council area, Scotland (OS grid ref NT568184).
- DenslowA surname from Old English.
- Little MissendenA village and civil parish in Buckinghamshire, England, previously in Chiltern district (OS grid ref SU9298).
- RattlesdenA village and civil parish in Mid Suffolk district, Suffolk, England (OS grid ref TL9759).