| Port Code | Port Name | Country |
| USDEW | Dewitt | United States |
| USDEX | Deer Park | United States |
| USDEY | Delray Beach | United States |
| USDEZ | Dewitt | United States |
| USDFD | Deerfield | United States |
| USDFF | Cedar Bluff | United States |
| USDFG | Daingerfield | United States |
| USDFI | Defiance | United States |
| USDFL | Deerfield | United States |
| USDFM | Deerfield | United States |
| USDFN | De Funiak Springs | United States |
| USDFO | De Forest | United States |
| USDFR | Bedford | United States |
| USDFS | Dumfries | United States |
| USDFU | Dunnellon | United States |
| USDFW | Dallas-Fort Worth Int Apt | United States |
| USDFX | Defense | United States |
| USDGA | Duluth | United States |
| USDGB | Danger Bay | United States |
| USDGL | Douglassville | United States |
| USDGN | Dahlgren | United States |
| USDGR | Deer Grove | United States |
| USDGS | Douglaston/Queens/New York | United States |
| USDGT | Dighton | United States |
| USDGV | Douglasville | United States |
| USDGW | Douglas | United States |
| USDGZ | Douglas | United States |
| USDHH | Durham | United States |
| USDHL | Dahlonega | United States |
| USDHN | Dothan | United States |
| USDHQ | Durham | United States |
| USDHS | Desert Hot Springs | United States |
| USDHT | Dalhart | United States |
| USDHX | Delhi | United States |
| USDIA | Adrian | United States |
| USDIB | Diboll | United States |
| USDID | Denver | United States |
| USDIK | Dickinson | United States |
| USDIL | Danville | United States |
| USDIM | Derma | United States |
| USDIO | Diomede Island | United States |
| USDIS | Daniels | United States |
| USDIU | Dinuba | United States |
| USDIZ | Dominguez Hills | United States |
| USDJN | Delta Junction | United States |
| USDJR | Dunlap | United States |
| USDKC | Dakota City | United States |
| USDKD | Dunkirk | United States |
| USDKK | Dunkirk | United States |
| USDKS | Dierks | United States |
| USDLA | Delair | United States |
| USDLD | De Land | United States |
| USDLE | Delisle | United States |
| USDLF | De Leon Springs | United States |
| USDLG | Dillingham | United States |
| USDLH | Duluth | United States |
| USDLI | Danville | United States |
| USDLJ | Delanco | United States |
| USDLK | Dayville | United States |
| USDLL | Dillon | United States |
| USDLN | Dillon | United States |
| USDLO | Dolomi | United States |
| USDLP | Darlington | United States |
| USDLR | Dal-nor | United States |
| USDLS | The Dalles | United States |
| USDLT | Deltona | United States |
| USDLU | Delano | United States |
| USDLV | Danville | United States |
| USDLX | Dallas | United States |
| USDLZ | Deerfield | United States |
| USDMD | Diamond | United States |
| USDMI | Drayton Plains | United States |
| USDMK | Denmark | United States |
| USDML | Dimondale | United States |
| USDMN | Deming | United States |
| USDMO | Sedalia | United States |
| USDMP | Demopolis | United States |
| USDMS | Dumas | United States |
| USDMT | Deer River | United States |
| USDMZ | Dominguez | United States |
| USDNA | Donaldsonville | United States |
| USDNB | Dunedin | United States |
| USDNC | Dorrance | United States |
| USDND | Dundee | United States |
| USDNE | Dane | United States |
| USDNG | Dongola | United States |
| USDNI | Denali | United States |
| USDNK | Duncan | United States |
| USDNL | Denville | United States |
| USDNM | Denham Springs | United States |
| USDNN | Dalton | United States |
| USDNO | Delano | United States |
| USDNP | Derry | United States |
| USDNQ | Denver | United States |
| USDNS | Denison | United States |
| USDNT | Downingtown | United States |
| USDNZ | Dunmore | United States |
| USDOA | Cordova | United States |
| USDOE | Doe Run | United States |
| USDOF | Dora Bay | United States |