County Leitrim was a Parliamentary constituency in Ireland, represented in the House of Commons of the United Kingdom of Great Britain and Ireland.
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.