| "A dangerous man to be among the Irish" : Archbishop Richard Creagh & the early Irish counter-reformation | Lennon, Colm | Article in Journal | | 2000 |
| "A living saint if ever there was one" : work, austerity and authority in the lives of Irish women of the house, 1921-1961 | Clear, Caitriona | Article in Book | University College Dublin Press | 1999 |
| "The bowels of the city's boundary" : the municipality of Dublin and the foundation of Trinity College in 1592 | Lennon, Colm | Article in Journal | | 1992 |
| "The whole country was in motion" : mendicancy and vagrancy in pre-famine Ireland | Geary, Laurence M. | Article in Book | University College Dublin Press | 1999 |
| 'The beauty and eye of Ireland' : the sixteenth century | Lennon, Colm | Article in Book | | 1988 |
| An Irish prisoner of conscience of the Tudor era : Archbishop Richard Creagh of Armagh, 1523-1586 | Lennon, Colm | Monograph or Collective Volume | Four Courts | 2000 |
| Archbishop Richard Creagh of Armagh, 1525-1586 : an Irish prisoner of conscience of the Tudor era | Lennon, Colm | Monograph or Collective Volume | Four Courts | 2000 |
| Bishops in contention : secular and ecclesiastical politics in later sixteenth-century Clogher | Lennon, Colm | Article in Journal | | 2006 |
| Bridging division or bonding faction? Civic confraternity and religious sodality in seventeenth-century Ireland | Lennon, Colm | Article in Book | | 2011 |
| Calendar of state papers Ireland : Tudor period 1547-1553 | | Monograph or Collective Volume | Irish Manuscripts Commission | 2015 |
| Civic life and religion in early seventeenth-century Dublin | Lennon, Colm | Article in Journal | | 1983 |
| Civic priveledge, state policy and the growth of recusancy: the patriciate of Dublin in the age of reformation, 1548-1613 | Lennon, Colm | Thesis | | 1987 |
| Civic privilege and state power in Dublin, 1534-1613 | Lennon, Colm | Article in Journal | | 1987 |
| Civic unity and the problem of urban poverty: a case study of St Audoen’s parish, Dublin, 1655–1700 | Lennon, Colm | Article in Book | | 2022 |
| Clontarf | Lennon, Colm | Monograph or Collective Volume | Royal Irish Academy | 2018 |
| Conflict and change in Old English society: the history of Richard Stanihurst's life and works | Lennon, Colm Anthony | Thesis | | 1975 |
| Confraternities and sodalities in Ireland: charity, devotion and sociability | | Monograph or Collective Volume | Columba Press | 2012 |
| Confraternities in Ireland : a long view | Lennon, Colm | Article in Book | Columba | 2012 |
| Confraternities in late medieval Ireland: the evolution of chantry colleges | Lennon, Colm | Article in Book | Brill | 2019 |
| Dives and Lazarus in sixteenth-century Ireland | Lennon, Colm | Article in Book | | 1999 |
| Dublin 1610 to 1756 : the making of the early modern city | Lennon, Colm | Monograph or Collective Volume | Royal Irish Academy | 2009 |
| Dublin's civic buildings in the early modern period | Lennon, Colm | Monograph or Collective Volume | Dublin City Public Libraries | 2010 |
| Dublin. Part 2, 1610 to 1756 | Lennon, Colm | Monograph or Collective Volume | Royal Irish Academy in association with Dublin City Council | 2008 |
| Dublin’s great explosion of 1597 | Lennon, Colm | Article in Journal | | 1995 |
| Edmund Campion's 'Histories of Ireland' and reform in Tudor Ireland | Lennon, Colm | Article in Book | | 2007 |
| Edmund Campion's Histories of Ireland and reform in Tudor Ireland | Lennon, Colm | Article in Book | | 1996 |
| Francis Taylor | Lennon, Colm | Article in Book | | 2005 |
| Francisco de Borja and the Irish mission of the Society of Jesus | Lennon, Colm | Article in Book | | 2011 |
| Fraternity and community in early modern Dublin | Lennon, Colm | Article in Book | | 2006 |
| From outlying villages to townships: Dublin suburbs in the nineteenth century | Cullen, FrankLennon, ColmMcManus, RuthÓ Maitiú, Séamas | Article in Book | NA | 2023 |
| From Speed to Rocque: the development of early modern Dublin | Lennon, Colm | Article in Journal | | 2009 |
| Ireland | Lennon, Colm | Article in Book | | 2013 |
| Ireland in the Renaissance : recent work and new directions | Lennon, Colm | Article in Journal | | 2013 |
| Irish Confraternities, 1400-1700 | Lennon, Colm | Article in Journal | | 2001 |
| John Rocque's Dublin : a guide to the Georgian city | Lennon, ColmMontague, John | Monograph or Collective Volume | Royal Irish Academy | 2010 |
| Le guerre di religione in Irlanda : colonizzazioni protestanti e martiri della Chiesa cattolica | Lennon, Colm | Article in Book | | 2001 |
| Luxury and austerity : Historical Studies XXI | | Monograph or Collective Volume | University College Dublin Press | 1999 |
| Mass in the manor house : the Counter-Reformation in Dublin, 1560-1630 | Lennon, Colm | Article in Book | | 2000 |
| Maurice O'Fihely and the coming of the printed word | Lennon, Colm | Article in Book | | 2013 |
| Mayor Francis Taylor (1595-6), the martyred mayor | Lennon, Colm | Article in Book | | 2013 |
| Ossory and the Reformation : the testimony of Carrigan's 'History and Antiquities' | Lennon, Colm | Article in Journal | | 2008 |
| Pedagogy and reform : the influence of Peter White on Irish scholarship in the Renaissance | Lennon, Colm | Article in Book | | 2007 |
| Peter White - a Renaissance schoolmaster in Kilkenny | Lennon, Colm | Article in Book | | 2009 |
| Political thought of Irish Counter-Reformation churchmen : the testimony of the "Analecta" of Bishop David Rothe | Lennon, Colm | Article in Book | | 1999 |
| Primate Richard Creagh and the beginnings of the Irish Counter-Reformation | Lennon, Colm | Article in Journal | | 1997 |
| Protestant reformations, 1550–1641 | Lennon, Colm | Article in Book | | 2018 |
| Recusancy and counter-reformation | Lennon, Colm | Article in Book | | 2006 |
| Recusancy and the Dublin Stanyhursts | Lennon, Colm | Article in Journal | | 1975 |
| Reform ideas and cultural resources in the inner Pale in the mid-sixteenth century | Lennon, Colm | Article in Journal | | 1979 |
| Reformation to restoration | Gillespie, RaymondLennon, Colm, | Article in Book | | 1997 |
| Reformation to Restoration | Gillespie, RaymondLennon, Colm, | Article in Book | | 2000 |
| Religion, conflict and coexistence in Ireland : essays presented to Monsignor Patrick Corish. | | Monograph or Collective Volume | | 1990 |
| Religious and social change in early modern Limerick : the testimony of the sexton family papers | Lennon, Colm | Article in Book | | 2009 |
| Religious wars in Ireland : plantations and martyrs of the Catholic church | Lennon, Colm | Article in Book | | 2002 |
| Richard Stanihurst (1547-1618) and Old English identity | Lennon, Colm | Article in Journal | | 1978 |
| Richard Stanihurst (1547-1618): Dublin's earliest historian | Lennon, Colm | Article in Journal | | 2020 |
| Richard Stanihurst the Dubliner 1547-1618 : a biography with a Stanihurst text on Ireland's past | Lennon, Colm | Monograph or Collective Volume | Irish Academic Press | 1981 |
| Richard Stanihurst's "Spanish Catholicism" : ideology and diplomacy | Lennon, Colm | Article in Book | | 2002 |
| Richard Stanihurst, 1547-1618 | Lennon, Colm | Article in Book | | 2003 |
| Sisters of the priory confraternity of Christ Church, Dublin, in the late middle ages | Lennon, Colm | Article in Book | | 2023 |
| Sixteenth-century Ireland : the incomplete conquest | Lennon, Colm | Monograph or Collective Volume | Gill & Macmillan | 1994 |
| Taking sides : the emergence of Irish Catholic ideology | Lennon, Colm | Article in Book | | 2003 |
| That field of glory : the story of Clontarf from battleground to garden suburb | Lennon, Colm | Monograph or Collective Volume | Wordwell | 2014 |
| The battle of Clontarf, 1014: a millennium of historical perspectives | Lennon, Colm | Article in Journal | | 2014 |
| The beatified martyrs of Ireland (8) : Francis Taylor | Lennon, Colm | Article in Journal | | 2000 |
| The Book of Obits of Christ Church cathedral, Dublin | Lennon, Colm | Article in Book | | 2006 |
| The changing face of Dublin, 1550-1750 | Lennon, Colm | Article in Book | | 2001 |
| The chantries in the Irish Reformation; the case of St Anne's Guild, Dublin, 1550-1630 | Lennon, Colm | Article in Book | | 1990 |
| The confraternities and cultural duality in Ireland, 1450–1550 | Lennon, Colm | Article in Book | Routledge | 2006 |
| The Council of Trent and Irish historiography | Lennon, Colm | Article in Book | Brepols | 2017 |
| The Counter-Reformation in Ireland 1542-1641 | Lennon, Colm | Article in Book | Irish Academic Press | 1986 |
| The dawn of the reformation in Ireland | Lennon, Colm | Article in Book | | 2006 |
| The dissolution to the foundation of St Anthony's College, Louvain, 1534-1607 | Lennon, Colm | Article in Book | | 2009 |
| The Dublin city franchise roll 1468-1512 | Lennon, ColmMurray, James | Monograph or Collective Volume | Dublin Corporation | 1998 |
| The Fitzgeralds of Kildare and the building of a dynastic image, 1500-1630 | Lennon, Colm | Article in Book | | 2006 |
| The flight of the earls in British-Spanish diplomacy | Lennon, Colm | Article in Book | | 2010 |
| The flowering of the confraternities and sodalities in Ireland, c. 1860-c. 1960 | Kavanagh, RobinLennon, Colm | Article in Book | Columba | 2012 |
| The foundation charter of St Sythe's guild, Dublin, 1476 | Lennon, Colm | Article in Journal | | 1994 |
| The fraternity of St Anne in St Audoen's parish, Dublin | Lennon, Colm | Article in Book | NA | 2012 |
| The great explosion in Dublin, 1597 | Lennon, Colm | Article in Journal | | 1988 |
| The impact of the Reformation on the urban community of Kilkenny, 1540-1640 | Lennon, Colm | Article in Journal | | 2018 |
| The Jesuit urban mission in Ireland, c.1598–1650 | Lennon, Colm | Article in Book | | 2022 |
| The lords of Dublin in the age of reformation | Lennon, Colm | Monograph or Collective Volume | Irish Academic Press | 1989 |
| The making of the Geraldines : the Kildare FitzGeralds and their early historians | Lennon, Colm | Article in Book | | 2014 |
| The man of law's tale | Lennon, Colm | Article in Book | | 2014 |
| The medieval manor of Clontarf, 1171-1540 | Lennon, Colm | Article in Book | | 2012 |
| The medieval town in the early modern city : attitudes to Dublin's immediate past in the seventeenth and eighteenth centuries | Lennon, Colm | Article in Book | | 2009 |
| The ministry of the Church of Ireland, 1536-1636 | Diamond, CiaranLennon, Colm, | Article in Book | | 2006 |
| The Nugent family and the diocese of Kilmore in the sixteenth and early seventeenth centuries | Lennon, Colm | Article in Journal | | 2001 |
| The parish fraternities and county Meath in the late middle ages | Lennon, Colm | Article in Journal | | 2008 |
| The political context at home and abroad for Ó Cianáin's work | Lennon, Colm | Article in Book | | 2011 |
| The print trade, 1550-1700 | Lennon, Colm | Article in Book | | 2006 |
| The print trade, 1700-1800 | Lennon, Colm | Article in Book | | 2006 |
| The registers of Christ Church Cathedral, Dublin | | Monograph or Collective Volume | Irish Academic Press | 1998 |
| The Richard Stanihurst-Justus Lipsius friendship : scholarship and religion under Spanish Habsburg patronage in the late sixteenth century | Lennon, Colm | Article in Book | | 2009 |
| The rise of recusancy among the Dublin patricians, 1580-1613 | Lennon, Colm | Article in Book | | 1989 |
| The shaping of a lay community in the Church of Ireland, 1558-1640 | Lennon, Colm | Article in Book | | 2002 |
| The sixteenth century | Lennon, Colm | Article in Book | | 1991 |
| The Survival of the Confraternities in Post-Reformation Dublin | Lennon, Colm | Article in Journal | | 1995 |
| The Urban Patriciates of early modern Ireland : a case-study of Limerick | Lennon, Colm | Monograph or Collective Volume | National University of Ireland | 1999 |
| Trades and services | Lennon, Colm | Article in Book | | 2013 |