| Advertisements for Ireland : being a description of the state of Ireland in the reign of James I contained in a manuscript in the library of Trinity College, Dublin | | Monograph or Collective Volume | | 1923 |
| Contemporary prose in English : 1940-2000 | O'Brien, George, 1945- | Article in Book | | 2006 |
| Economic progress of Ireland, 1912-1962 | O'Brien, George, 1892-1973 | Article in Journal | | 1962 |
| Father Thomas A. Finlay, S. J., 1848-1940 | O'Brien, George, 1892-1973 | Article in Journal | | 1940 |
| Father Tom Finlay | O'Brien, George, 1892-1973 | Article in Journal | | 1940 |
| Ireland's position in the world today | O'Brien, George, 1892-1973 | Article in Journal | | 1948 |
| Memoirs of an autobiographer | O'Brien, George, 1945- | Article in Book | | 2007 |
| Memoirs of Irish Rural Life | O'Brien, George | Article in Book | | 2018 |
| Modern Irish trade and industry | O'Brien, George, 1892-1973Riordan, E. J., | Monograph or Collective Volume | Methuen | 1920 |
| New light on Irish emigration | O'Brien, George, 1892-1973 | Article in Journal | | 1941 |
| O'Connell and the Ireland in which he lived | O'Brien, George, 1892-1973 | Article in Journal | | 1929 |
| Patrick Hogan, minister for agriculture, 1922-32 | O'Brien, George, 1892-1973 | Article in Journal | | 1936 |
| Rev. Professor T. A. Finlay, S. J. | O'Brien, George, 1892-1973 | Article in Journal | | 1940 |
| The economic history of Ireland from the Union to the famine | O'Brien, George, 1892-1973 | Monograph or Collective Volume | | 1921 |
| The economic history of Ireland in the eighteenth century | O'Brien, George, 1892-1973 | Monograph or Collective Volume | | 1918 |
| The economic history of Ireland in the seventeenth century | O'Brien, George, 1892-1973 | Monograph or Collective Volume | | 1919 |
| The fictional Irishman 1665-1850 | O'Brien, George, 1945- | Article in Journal | | 1977 |
| The impact of the war on the Irish economy | O'Brien, George, 1892-1973 | Article in Journal | | 1946 |
| The Irish free trade agitation of 1779 | O'Brien, George, 1892-1973 | Article in Journal | | 1924 |
| The Irish in the American melting-pot | O'Brien, George, 1892-1973 | Article in Journal | | 1946 |
| The Irish novel, 1960-2010 | O'Brien, George, 1945- | Monograph or Collective Volume | Cork University Press | 2012 |
| The Irish staple organisation in the reign of James I | O'Brien, George, 1892-1973 | Article in Journal | | 1926 |
| The Last word : reflections on 'Angela's Ashes' | O'Brien, George, 1945- | Article in Book | | 2000 |
| The village of longing : an Irish boyhood in the fifties | O'Brien, George, 1945- | Monograph or Collective Volume | Lilliput Press | 1987 |