Ossory, a division of Queen's County, was a constituency in Ireland, returning one Member of Parliament to the United Kingdom House of Commons from 1885 to 1918.
Prior to the 1885 general election and after the dissolution of Parliament in 1918 the area was part of the Queen's County constituency.
This constituency comprised the western part of Queen's County (renamed as County Laois in 1920).
The Redistribution of Seats Act 1885 defined the division as including the baronies of Clandonagh, Clarmallagh, Maryborough West, Tinnahinch, and Upper Woods, and that part of the barony of Portnahinch contained within the parish of Ardea.
O'Connor is also elected MP for East Donegal and opts to sit there, causing a by-election.
Delany's death causes a by-election.