County Leitrim was a parliamentary constituency in Ireland, represented in the House of Commons of the United Kingdom of Great Britain and Ireland. It returned two MPs from 1801 to 1885 and one from 1918 to 1922.
This constituency comprised the whole of County Leitrim.
Clements' death caused a by-election.
Montgomery resigned by accepting the office of Steward of the Manor of Hempholme, causing a by-election.
Gore succeeded to the peerage, becoming Lord Harlech, and causing a by-election.