| dune | dune |
| dune de sable | sand dune |
| Dune du Pyla | The Great Dune of Pyla |
| Dune II | Dune II |
| Dunedin | Dunedin |
| Dunes | Dyuni |
| Dunfermline | Dunfermline |
| Dunga | Dunga |
| Dunharrow | Dunharrow |
| Dunhill | Dunhill |
| Dunhuang | Dunhuang |
| Dunia Ayaso et Félix Sabroso | Dunia Ayaso and Félix Sabroso |
| Dunkeld | Dunkeld |
| Dunkerque | Dunkirk |
| Dunkleosteus | Dunkleosteus |
| Dunlop | Dunlop Tyres |
| Dunningen | Dunningen |
| Dunstan de Cantorbéry | Dunstan |
| Dunstanburgh Castle | Dunstanburgh Castle |
| Dunvallo Molmutius | Dunvallo Molmutius |
| duo | duet |
| duo comique | double act |
| duodécimal | duodecimal |
| duodénal | duodenal |
| duodénite | duodenitis |
| duodénum | duodenum |
| Duologie | Duology |
| Duomo di San Lorenzo | Genoa Cathedral |
| duopole | duopoly |
| dupe | victim |
| duper | take in |
