| A ballad of William Tirry : an Augustinian friar, 1609-54 | O'Connor, John | Monograph or Collective Volume | Augustinian Community | 1976 |
| A priest on the run : William Tirry, OSA, 1608-1654 | O'Connor, John | Monograph or Collective Volume | Veritas | 1992 |
| Archaeological discoveries during urban renewal in Kilmallock | O'Connor, John | Article in Journal | | 2000 |
| Ballyhaunis Friary : [St Mary's Abbey founded c. 1400] | O'Connor, John | Monograph or Collective Volume | Greensprint | 1996 |
| Buttevant's not-so-hidden history: the town's medieval defences revealed | Cotter, EamonnLong, PatriciaO'Connor, John | Article in Book | | 2016 |
| On Shannon's shore : a history of Mungret parish | O'Connor, John | Monograph or Collective Volume | Pubblebrien Historical Society | 2003 |
| Parnell visits "The Island of America" | O'Connor, John | Article in Journal | | 1971 |
| Phoenix Paradiso | O'Connor, John | Article in Journal | | 2019 |
| Sheep talk : a conversation between Alfred "Cap" Collier and John D. O'Connor | O'Connor, John | Article in Journal | | 2004 |
| St. Mary's Abbey, Ballyhaunis | O'Connor, John | Monograph or Collective Volume | Augustinian Community | 1983 |
| The 1916 Proclamation | O'Connor, John | Monograph or Collective Volume | Irish Books and Media | 1999 |
| The Galway Augustinians, Vol 1 : an abbey dies | O'Connor, John | Monograph or Collective Volume | Good Counsel Press | 1979 |
| The workhouses of Ireland : the fate of Ireland's poor | O'Connor, John | Monograph or Collective Volume | Anvil | 1995 |