Central Armagh was a constituency of the Parliament of Northern Ireland.

It was created when the House of Commons (Method of Voting and Redistribution of Seats) Act (Northern Ireland) 1929 introduced first-past-the-post elections throughout Northern Ireland.

[citation needed] The seat was centred on the towns of Portadown and Tandragee and included parts of the rural districts of Armagh, Lurgan and Tandragee.

[1] The seat was always won by Ulster Unionist Party candidates.

It was twice contested by labour movement candidates, who took around one third of the votes cast.