Encyclopedias, Almanacs, Transcripts, and Maps
- Dunash ben Tamim
- Duncan, Robert Kennedy
- Duncansbay Head
- Duncansby Head
- Duncanville
- Dundas
- Dundee, Angelo
- Dung, Nguyen Tan
- Duniway, Abigail Scott
- Dunkards
- Dunleary
- Dunnet Head
- Dunning, John, 1st Baron Ashburton
- Dunois, Jean, comte de
- Dunsinane
- duodecimal system
- duplication of the cube
- duPont, Margaret Osborne
- Düppel
- Duprat, Antoine