The 1915 Dublin College Green by-election was held on 11 June 1915.
The by-election was held due to the death of the incumbent Irish Parliamentary MP, Joseph Nannetti.
It was won by the Irish Parliamentary candidate John Dillon Nugent.
[1] Nannetti had represented an older school of trade unionism, based on skilled workmen and emphasising shared interest between workmen and employer, which was challenged by the rise of Larkinism mass unionism.
This article about a by-election to the Parliament of the United Kingdom in Ireland is a stub.