This category is for Members of Parliament elected to the 1921–1972 House of Commons of Northern Ireland for constituencies in County Down..
Constituencies:
- Ards (1929–72)
- Bangor (1969–72)
- Down (1921–29)
- East Down (1929–72)
- Iveagh (1929–72)
- Lagan Valley (1969–72)
- Larkfield (1969–72)
- Mid Down (1929–72)
- Mourne (1929–72)
- North Down (1929–72)
- South Down (1929–72)
- West Down (1929–72)
All items (4)