| "All native, all our own, and all a fact": John Mulvany and the Irish-American dream | O'Sullivan, Niamh | Article in Journal | | 2011 |
| Aloysius O'Kelly : art, nation, empire | O'Sullivan, Niamh | Monograph or Collective Volume | Field Day Publications|University of Notre Dame | 2010 |
| Every dark hour : a history of Kilmainham jail | O'Sullivan, Niamh | Monograph or Collective Volume | Liberties Press | 2007 |
| Every dark hour : a history of Kilmainham Jail | O'Sullivan, Niamh | Monograph or Collective Volume | Liberties Press | 2007 |
| Imaging the Land War | O'Sullivan, Niamh | Article in Journal | | 2004 |
| In the lion's den : Daniel Macdonald, Ireland and Empire | O'Sullivan, Niamh | Monograph or Collective Volume | Ireland's Great Hunger Museum, Quinnipiac University | 2016 |
| Lines of resistance : The O'Kelly brothers in the Sudan | O'Sullivan, Niamh | Article in Journal | | 1998 |
| Mass in a Connemara Cabin : Religion and the politics of painting | O'Sullivan, Niamh | Article in Journal | | 2005 |
| Reading between the lines | O'Sullivan, Niamh | Article in Book | | 2010 |
| The bond that knit the peasant to the soil: Rural lore and superstition in the work of Daniel Macdonald | O'Sullivan, Niamh
| Article in Book | | 2018 |
| The iron cage of femininity : visual representation of women in the 1880s land agitation | O'Sullivan, Niamh | Article in Book | | 1998 |
| The Kilmainham Gaol 'Ballykinlar Collection' | O'Sullivan, Niamh | Article in Journal | | 2004 |
| The tombs of a departed race : illustrations of Ireland's Great Hunger | O'Sullivan, Niamh | Monograph or Collective Volume | Quinnipiac University Press | 2014 |
| Through Irish eyes : the work of Aloysius O'Kelly in the Illustrated London News | O'Sullivan, Niamh | Article in Journal | | 1995 |
| Through Irish eyes. The work of Aloysius O'Kelly in the 'Illustrated London News' | O'Sullivan, Niamh | Article in Journal | | 1998 |
| Troubled waters : high art and popular culture, Dublin, 1821 | O'Sullivan, Niamh | Article in Book | | 2010 |
| Wit and whimsey | O'Sullivan, Niamh | Article in Journal | | 2019 |
| Written in stone : the graffiti in Kilmainham jail | O'Sullivan, Niamh, 1960- | Monograph or Collective Volume | Liberties Press | 2009 |