- Source: 1886 Dublin University by-election
- 1886 Dublin University by-election
- List of ministerial by-elections to the Parliament of the United Kingdom
- Dublin University (constituency)
- Government of Ireland Bill 1886
- 1886 Brentford by-election
- 1886 North Monaghan by-election
- 1888 Dublin University by-election
- 1887 Dublin University by-election
- 1886 United Kingdom general election in Ireland
- 1886 Blackpool by-election
The 1886 Dublin University by-election was a parliamentary by-election held for the United Kingdom House of Commons constituency of Dublin University on 13 August 1886. Following the general election of that year and the formation of a new government, both elected members in this two-seat constituency were appointed to government posts: David Plunket as First Commissioner of Public Works, and Hugh Holmes as Attorney-General for Ireland. According to the rules of the era, this required them to submit to re-election. No other candidate was nominated for either seat, and Plunket and Holmes were therefore elected unopposed: Plunket at 11 o'clock and Holmes at 12.