- downFrom a higher position to a lower one; downwards.
- DunhamA surname from Old English.
- DuttonA village and civil parish in Cheshire West and Chester, Cheshire, England (OS grid ref SJ575767).
- DuntonA village and civil parish in Central Bedfordshire district, Bedfordshire, England (OS grid ref TL2344).
- DunsmoreA hamlet in Ellesborough parish, Buckinghamshire, England (OS grid ref SP861110).
- RawdonA village and civil parish in the Metropolitan Borough of Leeds, West Yorkshire, England (OS grid ref SE2139).
- DunnettA surname.
- DunwichA small coastal village and civil parish (without a council) in East Suffolk district, Suffolk, England, previously in Suffolk Coastal district (OS grid ref TM4770).
- DuncombeA surname from Old English.
- BreedonA surname.
- ChurchdownA large village and civil parish in Tewkesbury borough, Gloucestershire, England (OS grid ref SO8820).
- DownleyA village and civil parish in Buckinghamshire, England, formerly in Wycombe district (OS grid ref SU8595).
- DungateA hamlet in Lynsted with Kingsdown parish and Rodmersham parish, Swale borough, Kent, England (OS grid ref TQ9159).
- Long CrendonA village and civil parish in Buckinghamshire, England, previously in Aylesbury Vale district, and bordering Thame in South Oxfordshire (OS grid ref SP6908).
- North DownsAn area of chalk downland in Kent and Surrey, in south-east England.