| "Spirit, impartiality and independence" : The Northern Star, 1792-1797 | O'Brien, Gillian | Article in Journal | | 1998 |
| 'A diabolical murder' : Clan na Gael, Chicago and the murder of Dr Cronin | O'Brien, Gillian | Article in Journal | | 2015 |
| 'An honourable station in respect of commerce, as well as constitutional liberty' : retailing, consumption and economic nationalism in Dublin, 1720-85 | Foster, Sarah | Article in Book | Four Courts Press | 2008 |
| 'And all her ghosts that walk': commemorating the past in Dublin's future | O'Brien, Gillian | Article in Book | Four Courts Press | 2012 |
| 'Beauties and defects' : Maria Edgeworth's representations of Georgian Dublin | Murphy, Sharon | Article in Book | Four Courts Press | 2008 |
| 'By no means relished by the gentlemen of the bar' : King's Inns moves to Constitution Hill | Kenny, Colum | Article in Book | Four Courts Press | 2008 |
| 'I am building a house': Nano Nagle's Georgian convents | Castle, JessieO'Brien, Gillian | Article in Journal | | 2016 |
| 'Spirit, impartiality and independence': the Northern Star, 1792-1797 | O'Brien, Gillian Pauline Mary | Thesis | | 1998 |
| 'What can possess you to go to Ireland?' : visitors' perceptions of Dublin, 1800-30 | O'Brien, Gillian | Article in Book | | 2008 |
| Blood runs green : the murder that transfixed gilded age Chicago | O'Brien, Gillian | Monograph or Collective Volume | The University of Chicago Press | 2015 |
| Camden and the move towards union 1795-1798 | O'Brien, Gillian | Article in Book | | 2001 |
| Georgian Dublin | | Monograph or Collective Volume | Four Courts | 2008 |
| History and environment | | Monograph or Collective Volume | University College Dublin: Lord Edward [Fitzgerald] Memorial Fund Board of Management | 1998 |
| Irish primary education in the early nineteenth century : an analysis of the first and second reports of the Commissioners of Irish Education Inquiry, 1825-6 | Fitzgerald, GarretO'Brien, GillianÓ Gráda, Cormac | Monograph or Collective Volume | Royal Irish Academy | 2013 |
| Lord Camden in Ireland, 1795-8 : a study in Anglo-Irish relations | O'Brien, Gillian | Thesis | | |
| Nano Nagle - an unconventional woman | Castle, JessieO'Brien, Gillian | Article in Journal | | 2018 |
| Portrait of the city : framing the significance of urban landscapes | O'Brien, Gillian,O'Kane, Finola | Article in Book | | 2012 |
| Portraits of the city: Dublin and the wider world | O'Brien, Gillian,O'Kane, Finola | Monograph or Collective Volume | Four Courts Press | 2012 |
| Revolution, rebellion and the viceroyalty, 1789-99 | O'Brien, Gillian | Article in Book | | 2012 |
| The 1825-6 Commissioners of Irish Education reports : background and context | O'Brien, Gillian | Article in Book | | 2013 |
| The darkness echoing : exploring Ireland's places of famine, death and rebellion | O'Brien, Gillian | Monograph or Collective Volume | Doubleday Ireland | 2020 |