Belfast North was a borough constituency of the Parliament of Northern Ireland from 1921 to 1929.

It returned four MPs, using proportional representation by means of the single transferable vote.

Belfast North was created by the Government of Ireland Act 1920 and contained the Clifton, Duncairn and Shankill wards of the County Borough of Belfast.

[1] In May 1921, Dáil Éireann, the parliament of the self-declared Irish Republic run by Sinn Féin, passed a resolution declaring that elections to the House of Commons of Northern Ireland and the House of Commons of Southern Ireland would be used as the election for the Second Dáil.

[3] Belfast North was a predominantly Unionist area with considerable pockets of labour strength.