Agnes Winifred O'Farrelly (24 June 1874 – 5 November 1951) (Irish: Úna Nà Fhaircheallaigh; nom-de-plume 'Uan Uladh'), was an academic and Professor of Irish at University College Dublin (UCD).
She was also the first female Irish-language novelist, a founding member of Cumann na mBan, and fourth president of the Camogie Association.