| A terrible beauty is born : the Irish troubles, 1912-22 | O'Connor, Ulick | Monograph or Collective Volume | Hamilton | 1975 |
| All the Olympians : a biographical portrait of the Irish literary renaissance | O'Connor, Ulick | Monograph or Collective Volume | [s.n.] | 1984 |
| Brendan Behan | O'Connor, Ulick | Monograph or Collective Volume | [s.n.] | 1993 |
| Douglas Hyde and the Abbey theatre | O'Connor, Ulick | Article in Book | | 1992 |
| Irish liberation | O'Connor, Ulick | Monograph or Collective Volume | Grove Press | 1974 |
| Oliver St John Gogarty : a poet and his times | O'Connor, Ulick | Monograph or Collective Volume | Cape | 1964 |
| Rugby's Svengali : Mark Sugden | O'Connor, Ulick | Article in Book | | 2003 |
| The Abbey portraits | O'Connor, Ulick | Article in Journal | | 2004 |
| The Gresham Hotel, 1865-1965 | O'Connor, Ulick | Monograph or Collective Volume | Gresham Hotel | 1965 |
| The Irish literary renaissance (1880-1904) and the New Irishman | O'connor, Ulick | Article in Journal | | 2003 |
| The troubles : Michael Collins and the volunteers in the struggle for Irish freedom, 1912-1922 | O'Connor, Ulick | Monograph or Collective Volume | Mandarin | 1996 |
| The Ulick O'Connor diaries, 1970-1981 : a cavalier Irishman | O'Connor, Ulick | Monograph or Collective Volume | John Murray | 2001 |
| The Yeats companion | O'Connor, Ulick | Monograph or Collective Volume | Pavilion Books | 1990 |