| 'A Kingdom near lost' : English military recovery in Ireland, 1600-03 | O'Neill, James | Article in Journal | | 2016 |
| An introduction to firearms in post-medieval Ireland : 1500-1700 | O'Neill, James | Article in Book | | 2007 |
| Beaches, fields and landing grounds | O'Neill, James | Article in Journal | | 2018 |
| Breaking the heart of Tyrone's rebellion? An assessment of Mountjoy's first campaigns in Ulster, May-November 1600 | O'Neill, James | Article in Journal | | 2017 |
| Col. Francis Barber, a soldier of the revolution | O'Neill, James L. | Article in Journal | | 1907 |
| Conflicting loyalties : Irish regiments in the imperial service, 1689-1710 | O'Neill, James | Article in Journal | | 1987 |
| Death in the Lakelands: Tyrone's proxy war, 1593-4 | O'Neill, James | Article in Journal | | 2015 |
| Distinguished Kerrymen | O'Neill, James | Article in Journal | | 1997 |
| Excavations at Bishop's Street Without : 17th Century Conflict Archaeology in Derry City | Logue, PaulO'Neill, James | Article in Journal | | 2006 |
| Field Marshal Francis Maurice Lacy (1725-1801) | O'Neill, JamesThompson, F. Glenn | Article in Journal | | 1987 |
| Firearms and fieldworks : military transformation and the end of Gaelic Ireland | O'Neill, James | Article in Book | | 2023 |
| George Crogan and Aughwick, Huntingdon County, Pennsylvania | O'Neill, James S. | Article in Journal | | 1910 |
| Half-moons and villainous works | O'Neill, James | Article in Journal | | 2014 |
| Hollidaysburg - the Holliday family - death of lieutenant Holliday at the battle of Brandywine - massacre of a portion of William Holliday's family - John Holliday, Aughwick - George Crogan | O'Neill, James L. | Article in Journal | | 1910 |
| Investigations at the site of the Battle of the Yellow Ford | Logue, PaulO'Neill, James, | Article in Book | | 2010 |
| Irish savages and English butchers : military identities and Tyrone’s rebellion, 1593-1603 | O'Neill, James | Article in Book | | 2019 |
| Irish warfare in the age of the military revolution : the 'Nine Years War', 1593-1603 | O'Neill, James | Thesis | | |
| Like sheep to the shambles? Slaughter and surrender during Tyrone's rebellion, 1593-1603 | O'Neill, James | Article in Journal | | 2018 |
| Maguire's revolt but Tyrone's war: proxy war in Fermanagh, 1593-4 | O'Neill, James | Article in Journal | | 2016 |
| Maurice Kyffin's advice on training infantry in Ireland, October 1597 | O'Neill, James | Article in Journal | | 2018 |
| Rev. James Caldwell, a patriot of the American revolution | O'Neill, James | Article in Journal | | 1900 |
| Sketches of William Dunlap, Thomas P. Johnson and Thomas Sharp, distinguished Irish Americans during revolutionary times | O'Neill, James L. | Article in Journal | | 1909 |
| Spouses, spies and subterfuge : the role and experience of women during the Nine Years War (1593-1603) | O'Neill, James | Monograph or Collective Volume | | 2021 |
| Spouses, spies and subterfuge: the role and experience of women during the Nine Years War (1593-1603) | O'Neill, James | Article in Journal | | 2021 |
| The archaeology of Armageddon | O'Neill, James | Article in Journal | | 2016 |
| The Battle of the Yellow Ford | Logue, PaulO'Neill, James | Article in Journal | | 2007 |
| The battlefield archaeology of the Yellow Ford | Logue, PaulO'Neill, James | Article in Book | | 2009 |
| The cockpit of Ulster: war along the River Blackwater 1593-1603 | O'Neill, James | Article in Journal | | 2014 |
| The European development of the family of Taaffe, 1641-1769 | O'Neill, James | Thesis | | 1987 |
| The Nine Years War, 1593 - 1603 : O'Neill, Mountjoy and the military revolution | O'Neill, James | Monograph or Collective Volume | Four Courts | 2017 |
| The nine years' war and Lough Neagh | O'Neill, James | Article in Book | | 2022 |
| Three sieges and two massacres: Enniskillen at the outbreak of the Nine Years' War, 1593-5 | O'Neill, James | Article in Journal | | 2016 |
| Volunteer activities in county Carlow during the War of Independence | O'Neill, James | Article in Journal | | 2017 |
| World War II and the lough : Cluntoe and Toome airfields | O'Neill, James | Article in Book | | 2022 |