Liam O'Flaherty (Irish: Liam Ó Flaithearta; 28 August 1896 – 7 September 1984) was an Irish novelist and short story writer and a major figure in the Irish literary renaissance.
He served on the Western Front as a soldier in the Irish Guards were he was badly injured.
After the war he was a founding member of the Communist Party of Ireland.
His brother Tom Maidhc O'Flaherty (also a writer) was also involved in radical politics and their father, Maidhc Ó Flaithearta, before them.
A native Irish-speaker from the Gaeltacht, O'Flaherty wrote almost exclusively in English, except for a small number of short stories in the Irish language.