| 'According to the Fashion of the Beetle' : inaugural lecture | Clarkson, L. A. (Leslie A.) | Monograph or Collective Volume | | 1984 |
| 'There is more Irish history slumbering in the rocks of Ballykeel than ever Belfast possessed.' Family and community in Forkill in the early-nineteenth century | Clarkson, L. A. (Leslie A.) | Article in Journal | | 2007 |
| A non-famine history of Ireland? | Clarkson, L. A. (Leslie A.) | Article in Journal | | 2002 |
| A university in troubled times : Queen's Belfast 1945-2000 | Clarkson, L. A. (Leslie A.) | Monograph or Collective Volume | Four Courts | 2004 |
| An anatomy of an Irish town : the economy of Armagh, 1770 | Clarkson, L. A. (Leslie A.) | Article in Journal | | 1978 |
| Armagh 1770 : portrait of an urban community | Clarkson, L. A. (Leslie A.) | Article in Book | | 1981 |
| Armagh town in the eighteenth century | Clarkson, L. A. (Leslie A.) | Article in Book | | 2005 |
| Birth, death and exile : Irish population history, 1700-1921 | Clarkson, L. A. (Leslie A.)Kennedy, L. | Article in Book | | 1993 |
| Chronicling a university : Queen's, Belfast, 1945-2004 | Clarkson, L. A. (Leslie A.) | Article in Book | | 2008 |
| Conclusion : famine and Irish history | Clarkson, L. A. (Leslie A.) | Article in Book | | 1989 |
| Did Ireland starve? | Clarkson, L. A. (Leslie A.) | Article in Book | | 2003 |
| Dietary directions : A topographical survey of Irish diet 1836 | Clarkson, L. A. (Leslie A.)Crawford, E. Margaret | Article in Book | | 1988 |
| Doing local history : Armagh in the late eighteenth century | Clarkson, L. A. (Leslie A.) | Article in Book | | 1998 |
| Feast and famine : food and nutrition in Ireland, 1500-1920 | Clarkson, L. A. (Leslie A.)Crawford, E. Margaret | Monograph or Collective Volume | Oxford University Press | 2001 |
| Hospitality, housekeeping and high living in eighteenth-century Ireland | Clarkson, L. A. (Leslie A.) | Article in Book | | 1999 |
| Household and family structure in Armagh city, 1770 | Clarkson, L. A. (Leslie A.) | Article in Journal | | 1978 |
| Irish population revisited 1687-1821 | Clarkson, L. A. (Leslie A.) | Article in Book | | 1982 |
| Irish population, economy and society : essays in honour of the late K.H. Connell | | Monograph or Collective Volume | Clarendon Press | 1982 |
| Irish social history 1974-2000 and beyond | Clarkson, L. A. (Leslie A.) | Article in Journal | | 2001 |
| James Eadie Todd and the school of history at the Queen's University of Belfast | Clarkson, L. A. (Leslie A.) | Article in Journal | | 2017 |
| K. H.Connell and economic and social history at Queen's University, Belfast | Clarkson, L. A. (Leslie A.) | Article in Book | | 1982 |
| Life after death : widows in Carrick-on-Suir, 1799 | Clarkson, L. A. (Leslie A.)Crawford, E. Margaret | Article in Book | | 1991 |
| Love, labour and life : women in Carrick-on-Suir in the late eighteenth century | Clarkson, L. A. (Leslie A.) | Article in Journal | | 1993 |
| Mapping the great Irish famine : a survey of the famine decades | | Monograph or Collective Volume | Four Courts | 1999 |
| Marriage and fertility in nineteenth-century Ireland | Clarkson, L. A. (Leslie A.) | Article in Book | | 1981 |
| Population change and urbanisation, 1821-1911 | Clarkson, L. A. (Leslie A.) | Article in Book | | 1985 |
| Population change in County Down, 1841-1911 | Clarkson, L. A. (Leslie A.) | Article in Book | | 1997 |
| Review article. "The crooked roar to partition". The highways and byways of late nineteenth- and early twentieth-century Ulster politics | Clarkson, L. A. (Leslie A.) | Article in Journal | | 2017 |
| Review article. Perspectives on Ireland's past, fiction, facts, interpretations | Clarkson, L. A. (Leslie A.) | Article in Journal | | 2016 |
| Review article. The Great Famine, further reflections | Clarkson, L. A. (Leslie A.) | Article in Journal | | 2017 |
| Review article. Writing, rewriting and remembering: twenty years of Great Famine publications | Clarkson, L. A. (Leslie A.) | Article in Journal | | 2014 |
| The Carrick-on-Suir woollen industry in the eighteenth century | Clarkson, L. A. (Leslie A.) | Article in Journal | | 1989 |
| The city and the county | Clarkson, L. A. (Leslie A.) | Article in Book | | 1983 |
| The city of Armagh in the eighteenth century | Clarkson, L. A. (Leslie A.)Simms, George Otto | Article in Book | | 2001 |
| The Demography of Carrick-on-Suir, 1799 | Clarkson, L. A. (Leslie A.) | Article in Journal | | 1987 |
| The environment and dynamic of pre-factory industry in Northern Ireland | Clarkson, L. A. (Leslie A.) | Article in Book | | 1989 |
| The modernisation of the Irish diet, 1740-1920 | Clarkson, L. A. (Leslie A.) | Article in Book | | 1999 |
| The writing of Irish economic and social history since 1968 | Clarkson, L. A. (Leslie A.) | Article in Journal | | 1980 |
| Ways to wealth : the Cust Family of eighteenth-century Armagh | Clarkson, L. A. (Leslie A.)Crawford, E. Margaret | Monograph or Collective Volume | | 1985 |