The 1918 Tullamore by-election was held on 19 April 1918.
The by-election was held due to the death of the incumbent Independent Nationalist MP, Edward John Graham.
It was won by the Sinn Féin candidate Patrick McCartan, who stood unopposed.
[1][2] McCartan had previously contested the by-election in South Armagh for Sinn Féin but lost out to the Irish Parliamentary Party candidate.
This article about a by-election to the Parliament of the United Kingdom in Ireland is a stub.