Londonderry City (UK Parliament constituency)

Londonderry City
Former Borough constituency for the House of Commons
1801–1922
Number of members	One
Replaced by	Londonderry

Londonderry City was a parliamentary constituency in Ireland. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post voting system .

This constituency was the Parliamentary borough of Derry in County Londonderry.

It was an original constituency represented in Parliament when the Union of Great Britain and Ireland took effect on 1 January 1801. In 1922 it was combined with North Londonderry and South Londonderry, to form the Londonderry county constituency.

After the extension of the franchise in 1885, the constituency was one of the most marginal seats in Ireland. There were many close elections.

Sinn Féin won in 1918. The MP (best known in Irish history as Professor Eoin MacNeill) was also returned by National University of Ireland. As MacNeill did not take his seat in the United Kingdom House of Commons he could not choose which constituency he would represent and arrange a by-election in the other. He played an active role in the First Dáil and in the government it set up.

The elections in this constituency took place using the first past the post electoral system.

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