Selected works
* ''Clár na Lámhscríbhinní Gaeilge sa Bhreatain Bhig''. Dublin, 1968. * ''Corpus Genealogiarum Sanctorum Hiberniae''. Dublin, 1985. . * ''Beatha Bharra, Saint Finbarr of Cork: The Complete Life''. Irish Texts Society 57. London. 1993. . * ''The Making of a Saint: Finbarr of Cork 600-1200''. Irish Texts Society Subsidiary Series 5. London, 1997. . * (ed.) ''Irish Texts Society: The First Hundred Years''. Irish Texts Society Subsidiary Series 9. London, 1998. . * (ed. with John Carey and Máire Herbert). ''Saints and Scholars: Studies in Irish Hagiography''. Dublin, 2001. . * ''Four Irish Martyrologies: Drummond, Turin, Cashel, York''. Woodbridge, 2002. . * (ed.) ''Beatha Aodha Ruaidh, the Life of Red Hugh O’Donnell: Historical and Literary Contexts''. Irish Texts Society Subsidiary Series 12. London, 2002. * (ed. with Diarmuid Ó Murchadha and Kevin Murray). ''Historical Dictionary of Gaelic Placenames: Foclóir Stairiúil Áitainmneacha na Gaeilge, Fascicle 1, Names Beginning in A-''. London, 2002. . * * ''A Dictionary of Irish Saints''. Four Courts Press. 2012.Festschrift
* John Carey, Máire Herbert and Kevin Murray (eds.), ''Cín Chille Cúile: Texts, Saints and Places. Essays in Honour of Pádraig Ó Riain''. Celtic Studies Publications. Aberystwyth, 2004. .References
{{DEFAULTSORT:ORiain, Padraig Celtic studies scholars Linguists from the Republic of Ireland Living people 20th-century Irish writers 21st-century Irish writers Irish-language writers Year of birth missing (living people) Academics of University College Cork Codicologists Members of the Royal Irish Academy