Belfast Dock (Northern Ireland Parliament constituency)

Belfast Dock was a constituency of the Parliament of Northern Ireland from 1921 to 1929. It was located in the city of Belfast.

Created under the Government of Ireland Act 1920, the constituency returned one member using first-past-the-post electoral system.

In 1929, the constituency was abolished under the Electoral Law Act (Northern Ireland) 1929, and its area was absorbed into the four new Belfast multi-member constituencies. The area largely fell within Belfast East.

Members of Parliament included:

• 1921: James Baird (Ulster Unionist Party)
• 1925: Herbert Dixon (Ulster Unionist Party)