The parliamentary borough of Wexford, Ireland, was represented in the House of Commons of the United Kingdom from 1801 to 1885 by a borough constituency electing one Member of Parliament (MP), on the electoral system of first past the post. It succeeded the two-seat constituency of Wexford represented in the Irish House of Commons until the abolition of the Irish Parliament on 1 January 1801 under the Acts of Union 1800.
The boundaries of the constituency were defined in the Parliamentary Boundaries (Ireland) Act 1832 as:
Under the Representation of the People (Ireland) Act 1868, its boundaries were extended to include all of the municipal borough of Wexford.
On petition, Devereux was unseated due to "informality" in the return, causing a by-election at which he was re-elected.
Devereux resigned, causing a by-election.
Redmond's death caused a by-election.
Healy resigned to stand at the 1883 by-election in Monaghan, causing a by-election.