| Dumbarton District of Burghs |
|
| Dumfries |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Dumfries and Galloway |
|
| Dumfries District of Burghs |
|
| Dumfriesshire |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Dumfriesshire, Clydesdale and Tweeddale |
|
| Dunbartonshire |
|
| Dunbartonshire Central |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Dunbartonshire East |
Constituency of same name reformed 2005. |
| Dunbartonshire East |
Constituency of same name existed 1950-1983. |
| Dunbartonshire West |
Constituency of same name reformed 2005. |
| Dunbartonshire West |
Constituency of same name existed 1950-1983. |
| Dundalk |
|
| Dundee |
|
| Dundee Central |
|
| Dundee East |
|
| Dundee West |
|
| Dunfermline |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Dunfermline and Dollar |
|
| Dunfermline and West Fife |
|
| Dunfermline Burghs |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Dunfermline District of Burghs |
|
| Dunfermline East |
|
| Dunfermline West |
|
| Dungannon |
|