| All Ireland is in and about Rathkeale | O'Connor, Patrick J. | Monograph or Collective Volume | Oireacht na Mumhan Books | 1996 |
| All worlds possible : the domain of the Millers of Coolybrown | O'Connor, Patrick J. | Monograph or Collective Volume | Oireacht na Mumhan Books | 1993 |
| An eighteenth century plan of Newcastle | O'Connor, Patrick J. | Article in Journal | | 1981 |
| An eighteenth-century land surveyor and Newcastle | O'Connor, Patrick | Article in Journal | | 1987 |
| Atlas of Irish place-names | O'Connor, Patrick | Monograph or Collective Volume | Oireacht na Mumhan Books | 2001 |
| Cromwell and Crumlin | O'Connor, Patrick | Article in Journal | | 1950 |
| Debtors in Dublin prisons, 1730-1 | O'Connor, Patrick | Article in Journal | | 1945 |
| Emerging voices : women in contemporary Irish society | O'Connor, Patrick | Monograph or Collective Volume | [s.n.] | 1998 |
| Emigration and famine : the evidence of Francis Spaight, July 1847 | O'Connor, Patrick J. | Article in Journal | | 1995 |
| Exploring Limerick's past : an historical geography of urban development in county and city | O'Connor, Patrick J. | Monograph or Collective Volume | Oireacht na Mumhan Books | 1987 |
| Extracts relating to Old Dublin from the 'London Gazette' | O'Connor, Patrick | Article in Journal | | 1943 |
| Gender and organisational culture at senior management level : limits and possibilities for change | O'Connor, Pat | Article in Book | | 2010 |
| Glin maps | O'Connor, Patrick J. | Article in Book | | 2009 |
| Hometown : a portrait of Newcastle West, Co. Limerick | O'Connor, Patrick J. | Monograph or Collective Volume | Oireacht na Mumhan Books | 1998 |
| Hurdle making in Dublin, 1302-3 | O'Connor, Patrick | Article in Journal | | 1952 |
| Ireland's last best west : evidence from the Courtenay/Devon estate | O'Connor, Patrick | Article in Journal | | 1990 |
| John Stratton O'Leary and the O'Leary Flats | O'Connor, Patricia | Article in Journal | | 1989 |
| Living in a coded land | O'Connor, Patrick J. | Monograph or Collective Volume | Oireacht na Mumhan Books | 1992 |
| Medieval regionalism in north county Kerry : a region anatomised | O'Connor, Patrick J. | Article in Journal | | 1991 |
| Military precautions in Dublin, 1803 | O'Connor, Patrick | Article in Journal | | 1943 |
| Our place : Meanus and our people : Camogue Rovers | | Monograph or Collective Volume | Camogue G.A.A. Club | 2003 |
| People make places : the story of the Irish palatines | O'Connor, Patrick J. | Monograph or Collective Volume | Oireacht na Mumhan Books | 1989 |
| Remembering Mainchin Seoighe | O'Connor, Patrick J. | Article in Journal | | 2006 |
| So long to Coolanoran | O'Connor, Patrick J. | Monograph or Collective Volume | Oireacht na Mumhan Books | 2011 |
| Some guides to the Irish scene | O'Connor, Patrick J. | Monograph or Collective Volume | Oireacht na Mumhan Books | 1992 |
| St Columban's Society : the modern disciples of the saint | O'Connor, Patrick | Article in Book | | 1951 |
| Still changing places : women's paid employment and gender roles | O'Connor, Pat | Article in Journal | | 2007 |
| The Irish College in Paris : from penal days seminary to Irish cultural centre | O'Connor, Patrick | Article in Book | | 2009 |
| The maturation of town and village life in county Limerick, 1700-1900 | O'Connor, Patrick J. | Article in Book | | 1988 |
| The O'Connors of Swinford County Mayo : a family history | O'Connor, Patrick | Monograph or Collective Volume | Old House | 1998 |
| The promotion of a Limerick linen industry : 1760-1763 | O'Connor, Patrick J. | Article in Journal | | 1989 |
| The royal O'Connors of Connaught | O'Connor, Patrick | Monograph or Collective Volume | Old House Press | 1997 |
| The seigniory of Castleisland in the seventeenth century | O'Connor, Patrick | Article in Journal | | 1970 |