| Annála ríoghachta Éireann : Annals of the Kingdom of Ireland, by the four masters, from the earliest period to 1616. 7 vols. | | Monograph or Collective Volume | Hodges & Smith | 1851 |
| Annals of Ireland : Three fragments, copied from ancient sources, edited with a translation and notes from a MS preserved in the Burgundian Library at Brussels | | Monograph or Collective Volume | | 1860 |
| Annals of Ireland, 1443-68. Trans. from the Irish by Dudley Firbasse, or Duald MacFirbis, for Sir James Ware in 1666 | | Article in Book | | 1846 |
| Annals of the kingdom of Ireland from the earliest times to the year 1616 | | Monograph or Collective Volume | De Búrca Rare Books | 1990 |
| Captain Bill Murphy of Tullow. Unsung hero of the Somme | O'Donovan, John | Article in Journal | | 2016 |
| Captain Daniel Desmond Sheehan; an introductory essay | O'Donovan, John | Article in Journal | | 2015 |
| Class, conflict and the United Irish League in Cork, 1900-1903 | O'Donovan, John | Article in Journal | | 2012 |
| Daniel Desmond (D.D.) Sheehan (1873-1948) and the rural labour question in Cork, 1894-1910 | O'Donovan, John | Article in Book | | 2013 |
| Docwra's Derry : a narration of events in North-west Ulster, 1600-1604 | Docwra, Henry, 1st Baron Docwra of Culmore, bap. 1564, d. 1631 | Monograph or Collective Volume | Ulster Historical Foundation | 2003 |
| Election expenses - The cost of an abandoned campaign | O'Donovan, John | Article in Journal | | 2024 |
| Evidence of Jeremiah Hurley to the Royal Commission on Congestion (Dudley Commission), July 1907 | O'Donovan, John | Article in Journal | | 2011 |
| Four old parishes | O'Donovan, John | Article in Journal | | 2006 |
| John O'Donovan's letters from County Fermanagh (1834) : letters containing information relative to the antiquities and families and places collected during the ordnance survey in 1834 | O'Donovan, John, 1806-1861 | Monograph or Collective Volume | St Davog's Press | 1993 |
| John O'Donovan's letters from county Londonderry (1834) : letters containing information relative to the antiquities of the county Londonderry collected during the progress of the Ordnance Survey | O'Donovan, John, 1806-1861 | Monograph or Collective Volume | Ballinascreen Historical Society | 1992 |
| Leap Parochial Hall : the first fifty years - a potted history | O'Donovan, John | Article in Journal | | 2014 |
| Life by the Liffey : a kaleidoscope of Dubliners | O'Donovan, John | Monograph or Collective Volume | Gill & Macmillan | 1986 |
| Mac Con Midhe, Giolla Brighde | | Article in Journal | | 1849 |
| Members and messengers : Carlow's 20th century parliamentarians | O'Donovan, John | Monograph or Collective Volume | The author | 2003 |
| Miscellany of the Celtic Society | | Monograph or Collective Volume | | 1849 |
| Nationalist political conflict in Cork, 1910 | O'Donovan, John | Article in Journal | | 2012 |
| Ordnance Survey letters for Co. Kildare | O'Donovan, John, 1806-1861 | Article in Journal | | 1942 |
| Ordnance Survey letters for county Kildare | O'Donovan, John, 1806-1861 | Article in Journal | | 1949 |
| Ordnance Survey letters for Kildare | O'Donovan, John, 1806-1861 | Article in Journal | | 1952 |
| Poem on the battle of Dun (1260). | MacConmidhe, Gilla-Brighde | Article in Book | | 1849 |
| Poem on the battle of Dun, 1260 | Mac Con Midhe, Giolla Brighde | Article in Book | | 1849 |
| Political violence in Cork: case studies of the Newmarket and Bantry riots, 1910 | O'Donovan, John | Article in Journal | | 2011 |
| Poulgorm Bridge and Inner Glandore Harbour: Part 1 | O'Donovan, John | Article in Journal | | 2014 |
| Shaw and the charlatan genius | O'Donovan, John | Monograph or Collective Volume | Dolmen Press | 1965 |
| Some letters of Dr. John O'Donovan | O'Donovan, John, 1806-1861
| Article in Journal | | 1940 |
| The 'lost' letters of John O'Donovan | O'Donovan, John | Article in Book | | 2001 |
| The All-for-Ireland League and the Home Rule debate, 1910-14 | O'Donovan, John | Article in Book | | 2014 |
| The antiquities of County Clare : letters containing information relative to the antiquities of the County of Clare collected during the progress of the Ordnance Survey in 1839; & letters and extracts... | O'Curry, EugeneO'Donovan, John E. | Monograph or Collective Volume | Clasp | 1997 |
| The antiquities of the County of Kerry | O'Donovan, John, 1806-1861 | Monograph or Collective Volume | Royal Carberry Books | 1983 |
| The book of rights | | Monograph or Collective Volume | | 1847 |
| The economic history of livestock in Ireland | O'Donovan, John | Monograph or Collective Volume | Cork University Press | 1940 |
| The Irish judiciary in the 18th and 19th centuries | O'Donovan, John | Article in Journal | | 1971 |
| The topographical poems of John O'Dubhagain and Giolla na naomh Ó hUidhrin | | Monograph or Collective Volume | Irish Archaeological and Celtic Society | 1862 |
| The tribes and customs of Hy-Many, commonly called O'Kelly's country | | Monograph or Collective Volume | Tower Books | 1976 |
| Too much democracy. Local government reford and the Carlow elections of 1899 | O'Donovan, John | Article in Journal | | 2015 |
| Tracts relating to Ireland, 1 | | Monograph or Collective Volume | | 1841 |
| Two letters of John O'Donovan | O'Donovan, John, 1806-1861 | Article in Journal | | 1954 |
| W.T. Cosgrave the Carlow connection | O'Donovan, John | Article in Journal | | 2019 |
| West Cork and the outbreak of the Second Anglo-Boer War, 1899-1900 | O'Donovan, John | Article in Journal | | 2016 |
| Wheels and deals : people and places in Irish motoring | O'Donovan, John | Monograph or Collective Volume | Gill & Macmillan | 1983 |