Domhnall Ua Buachalla (pronounced [d???wn??al?? u? b?u?xal??a]; English: Daniel Richard (Donal) Buckley; 5 February 1866 – 30 October 1963) was an Irish politician and member of the First Dáil who served as third and final Governor-General of the Irish Free State and later served as a member of the Council of State.