Lorcán Ua Tuathail (pia: Laurence O'Toole; Castledermot,1128 – Eu, 14 Novemba 1180) alikuwa askofu mkuu wa Dublin, Ireland, wakati kisiwa hicho kilipovamiwa na Wanormani. Alichangia sana urekebisho wa Kanisa la huko katika karne ya 12 na kupatanisha wenyeji na wavamizi. Tarehe 11 Desemba 1225 alitangazwa na Papa Honorius III kuwa mtakatifu. Sikukuu yake huadhimishwa tarehe 14 Novemba. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko Butler, Rev. Alban, "St. Lawrence, Confessor, Archbishop Of Dublin", The Lives or the Fathers, Martyrs and Other Principal Saints, Vol. III. Jalada kutoka ya awali juu ya 2017-11-16. Iliwekwa mnamo 2018-02-06. Grattan-Flood, William. "St. Lawrence O'Toole." The Catholic Encyclopedia. Vol. 9. New York: Robert Appleton Company, 1910. 20 Feb. 2013 "St. Lawrence O'Toole" Archived 18 Novemba 2012 at the Wayback Machine., Catholic News Agency Dublin Diocese Jubilee Resource Material. Jalada kutoka ya awali juu ya 2013-12-03. Iliwekwa mnamo 2018-02-06. Martyrologium Romanum Wikimedia Commons ina media kuhusu: Lorcán Ua Tuathail http://www.cin.org/lauotool.html