| A history of Hospital and its environs | O'Sullivan, Michael F. | Monograph or Collective Volume | Aisling | 1995 |
| A triumphal archway in Doneraile | O'Sullivan, Michael | Article in Journal | | 2013 |
| Affecting Irishness : negotiating cultural identity within and beyond the nation | | Monograph or Collective Volume | Peter Lang | 2009 |
| Ballyvonare Camp | O'Sullivan, Michael | Article in Journal | | 2016 |
| Brendan Behan : a life | O'Sullivan, Michael, 1957- | Monograph or Collective Volume | Blackwater | 1997 |
| Creagh houses of Doneraile (part 1) | Humphreys, JulianO'Sullivan, MichaelSmith, Michael | Article in Journal | | 2013 |
| From garden to table at Doneraile Court | O'Sullivan, Michael | Article in Journal | | 2018 |
| Ireland and the global question | O'Sullivan, Michael J. | Monograph or Collective Volume | Cork University Press | 2006 |
| Mallow railway | O'Sullivan, Michael | Article in Journal | | 1983 |
| Mary Robinson : the life and times of an Irish liberal | O'Sullivan, Michael, 1957- | Monograph or Collective Volume | Blackwater | 1993 |
| Michael Spillane, Michael J. O'Sullivan, Killarney Coy. I.V. I.R.B. | O'Sullivan, Michael J.Spillane, Michael | Article in Book | | 2016 |
| Monumental inscriptions at the abbey, Kilculliheen, Ferrybank, Co. Waterford. Part 1 : nos 1-88 (lettters A-D) | O'Sullivan, Michael | Article in Journal | | 1994 |
| Monumental inscriptions at the abbey, Kilculliheen, Ferrybank, Co.Waterford. Part 11, nos 89-165 (letters E to J) | O'Sullivan, Michael | Article in Journal | | 1994 |
| Monumental inscriptions at the Abbey, Kilculliheen, Ferrybank, Waterford. Part III : nos 166-251 (letters K-P); Part IV : nos 252-322 (letters R-W) | O'Sullivan, Michael | Article in Journal | | 1997 |
| Patriot graves : resistance in Ireland | O'Sullivan, Michael P. | Monograph or Collective Volume | Follett | 1972 |
| Reenascreena group water scheme | O'Sullivan, Michael | Article in Journal | | 2005 |
| Reenascreena Woolen Mills, 1850-1955 | O'Sullivan, Michael | Article in Journal | | 2000 |
| Sean Lemass : a biography | O'Sullivan, Michael, 1957- | Monograph or Collective Volume | Blackwater | 1994 |
| The Association of Municipal Authorities of Ireland : Golden Jubillee Conference, Town Hall, Skibbereen, 24th, 25th and 26th September, 1963 | O'Sullivan, Michael | Article in Journal | | 2013 |
| The complete gardener - a life of Jimmy Pyne | O'Sullivan, Michael | Article in Journal | | 2014 |
| The eyes of another race : Roger Casement's Congo report and 1903 diary | Casement, Roger DavidO'Sullivan, Michael, 1962-2002Ó Síocháin, Séamus | Monograph or Collective Volume | University College Dublin | 2003 |
| The floods of Mallow, part 2 | O'Sullivan, Michael | Article in Journal | | 1988 |
| The river crossing at Mallow | O'Sullivan, Michael | Article in Journal | | 1985 |
| The Shelbourne and its people | O'Neill, BernadineO'Sullivan, Michael, 1957- | Monograph or Collective Volume | Blackwater | 1999 |