Andrew Holmes is a graduate of Queen's University Belfast (1998), the University of St Andrews (2000), and Queen's, again, in 2002. Since being awarded his doctorate, he has been a Research Associate at the Academy for Irish Cultural Heritages at the University of Ulster, where he also taught Irish history, and a Research Fellow at the Institute of Irish Studies at Queen's. He took up his present appointment in October 2006.

He was elected Fellow of the Royal Historical Society in 2007 and Fellow of the Higher Education Academy in 2008. He is currently a member of the Editorial Board of Irish Historical Studies and a committee member of the Ulster Society for Irish Historical Studies. In 2016, he was an Eaton Fellow at the University of New Brunswick and has previously been a Visiting Scholar at Boston College (2011) and at the School of Divinity, University of Edinburgh (2009, 2013).

Professor Holmes is an expert in the history of religion in Ireland from c. 1660 to the present day with particular reference to Presbyterianism and evangelicalism.

Most recently, he co-edited with Gladys Ganiel The Oxford Handbook of Religion in Modern Ireland (2024). He is author of The Irish Presbyterian Mind: Conservative Theology, Evangelical Experience, and Modern Criticism, 1830-1930 (OUP 2018) and The Shaping of Ulster Presbyterian Belief and Practice 1770-1840 (OUP 2006). He is co-editor of four edited volumes and has published articles in various history journals, including, English Historical Review, Historical Journal, Journal of British Studies, History of European Ideas, Church History, Journal of Ecclesiastical History, Bulletin of the John Rylands University Library, Irish Historical Studies, British Journal of the History of Science, and Modern Intellectual History. In addition, he has been commissioned to write chapters for survey works, including, The Cambridge History of Christianity, The Cambridge Social History of Ireland, The Cambridge History of Ireland, The Oxford History of Protestant Dissenting Traditions, and The Oxford Dictionary of the Christian Church.

Professor Andrew Holmes teaches on the following programmes / modules:

Undergraduate

Religion in an Age of Revolutions: Britain and Ireland, 1688-1798 (Level 1)

The Death of Christian Britain, c. 1789 to 1914? (Level 1)

Uniting Kingdoms? Britain and Ireland, 1603-1815 (Level 2)

Presbyterians in Ulster, 1690-1840 (Level 3)

United Irishmen and Unionists: The Religion and Politics of Ulster Protestants (Level 3)