Encyclopedias, Almanacs, Transcripts, and Maps
- Dual Monarchy
- Duane, James
- Duane, James Chatham
- Dubawnt
- Dubawnt Lake
- Dübendorf
- Dublin, University of
- Dubnow, Simon
- Ducas
- Ducasse, Isidore
- Duceppe, Gilles
- Duchenne, Guillaume Benjamin Amand
- Duchesne, Louis Marie Olivier
- Duchesne, Saint Rose Philippine
- duck hawk
- Duck Lake
- duckbill (fish)
- duckbill (marsupial)
- Duclos, Jacques
- Ducommun, Élie