| Amhráin Thomáis Rua Uí Shúilleabháin | Ó Catháin, Diarmaid | Article in Book | | 2013 |
| An Irish scholar abroad : bishop John O'Brien of Cloyne and the Macpherson controversy | Ó Catháin, Diarmaid | Article in Book | | 1993 |
| Augustinian friars and literature in Irish, 1600-1900 | Ó Catháin, Diarmaid | Article in Journal | | 1995 |
| Charles O'Conor of Belanagare : antiquary and Irish scholar | Ó Catháin, Diarmaid | Article in Journal | | 1989 |
| Dermot O'Connor, translator of Keating | Ó Catháin, Diarmaid | Article in Journal | | 1987 |
| Dr John Fergus M.D. (d.1761) of Dublin and the cultural afterlife of a Gaelic learned kindred | Ó Catháin, Diarmaid | Article in Journal | | 2025 |
| Féilte Cláirseoireachta Ghránaird, John Dungan, Cóbanhávan, agus an Rómánsachas Luath | Ó Catháin, Diarmaid | Article in Journal | | 2007 |
| General Baron Edmund Harold (1737-1808) : a "Celtic" writer in Germany | Ó Catháin, Diarmaid | Article in Journal | | 1999 |
| John Fergus MD : eighteenth-century doctor, book collector and Irish scholar | Ó Catháin, Diarmaid | Article in Journal | | 1989 |
| Ordnance survey letters : Kilkenny, 1839 : Letters containing information relative to the antiquities of the county of Kilkenny | NA | Monograph or Collective Volume | Fourmasters Press | 2003 |
| Revd Charles Bunworth of Buttevant : patron of harpers and poets | Ó Catháin, Diarmaid | Article in Journal | | 1997 |
| Some account of Charles O'Conor and literacy in Irish in his time | Ó Catháin, Diarmaid | Article in Book | | 2015 |
| Some reflexes of Latin learning and of the Renaissance in Ireland, c.1450-c.1600 | Ó Catháin, Diarmaid | Article in Book | | 2009 |
| The old musicians of north Kerry | Ó Catháin, Diarmaid | Article in Journal | | 1991 |
| Tomás Ó Catháin, a note on the battle of Ballinamuck | Ó Catháin, Diarmaid | Article in Journal | | 1997 |
| Walter Harris and The whole works of Sir James Ware | Ó Catháin, Diarmaid | Article in Book | Four Courts | 2012 |