The October 1888 Merthyr Tydfil by-election was a parliamentary by-election held for the House of Commons constituency of Merthyr Tydfil in Wales on 26 October 1888.
The by-election was caused by the death of the sitting Liberal MP, Henry Richard on 20 August 1888.
[1] Two candidates nominated.
The Liberal Party (UK) nominated Baptist Minister Richard Foulkes Griffiths.
[2] Welsh solicitor, mine owner, and company promoter William Pritchard-Morgan ran as an Independent Liberal The Independent Liberal gained the seat from the Liberal Party.