| Dac Lac (Vietnam) |
Buon Ma Thuot |
| Dadra and Nagar Haveli (India) |
Silvassa |
| Dagestan (Russia) |
Makhachkala |
| Darfur (Sudan) |
Al-Fashir |
| Darien (Panama) |
La Palma |
| Delaware (USA) |
Dover |
| Demerara / Mahaica (Guyana) |
Paradise |
| Denmark |
Copenhagen |
| Derbyshire (England) |
Matlock |
| Des Plateaux (Togo) |
Atakpama |
| Des Savanes (Togo) |
Dapaong |
| Deux-Sevres (France) |
Niort |
| Devon (England) |
Exeter |
| Dhaalu (Maldives) |
Kudahuvadhoo |
| Dhi Qär (Iraq) |
An-Nasiriyah |
| Dibar (Albania) |
Peshkopi |
| Dimashq (Syria) |
Damascus |
| Dimbovita (Romania) |
Tirgoviste |
| Djibouti |
Djibouti |
| Dolj (Romania) |
Craiova |
| Dominica |
Roseau |
| Dominican Republic |
Santo Domingo |
| Donegal (Republic of Ireland) |
Lifford |
| Dong Nai (Vietnam) |
Bien Hoa |
| Dong Thap (Vietnam) |
Sa Dec |
| Dordogne (France) |
Perigueux |
| Dornod (Mongolia) |
Choybaisan |
| Dornogovi (Mongolia) |
Saynshand |
| Dorset (England) |
Dorchester |
| Doubs (France) |
Besancon |
| Doufelgou (Togo) |
Niamtougou |
| Down (Northern Ireland) |
Downpatrick |
| Drenthe (Netherlands) |
Assen |
| Drome (France) |
Valence |
| Duarte (Dominican Republic) |
San Francisco de Macoris |
| Dublin (Republic of Ireland) |
Dublin |
| Dumfries and Galloway (Scotland) |
Dumfries |
| Dundgovi (Mongolia) |
Mandalgov |
| Durham (England) |
Durham |
| Dyfed (Wales) |
Carmarthen |
| Dzavhan (Mongolia) |
Uliastay |
