Anthony Terence Quincey Stewart (8 July 1929 – 16 December 2010) was a historian, teacher, academic and a best-selling author on the politics of Ulster and Northern Ireland. From a Presbyterian background, he was a History master at the Belfast Royal Academy and taught for many years at Queen's University, Belfast.
- The Ulster Crisis: Resistance to Home Rule 1912-14 (London: Faber & Faber 1967, rep. edns. 1969, 1993, 1997)
- The Narrow Ground: Aspects of Ulster 1609-1969 (London: Faber 1977; Gregg Revivals 1993; rep. Blackstaff 1997)
- Edward Carson [in Gill's Irish Lives] (Dublin, 1981)
- Belfast Royal Academy: The First Century 1785-1885 (BRA, Belfast 1985)
- The Harp new strung: nationalism, culture and the United Irishmen, in Oliver MacDonagh and W. F. Mandle, eds., Ireland and Irish-Australia (London: Croom Helm 1986)
- A Deeper Silence: The Hidden Roots of the United Irishmen (London: Faber & Faber 1993)
- The Summer Soldiers: The 1798 Rebellion in Antrim and Down (Belfast: Blackstaff Press 1995)
- Michael Collins: the Secret File (Belfast: Blackstaff, 1997)
- The Shape of Irish History (Belfast: Blackstaff 2001)
- BBC - History of Ireland series
- Thames TV - The Troubles
- Channel 4 - The Divided Kingdom
- Interview in History Ireland magazine, summer 1993.
- From the United Irishmen to Twentieth-century Unionism; A Festschrift for A. T. Q. Stewart (Dublin: Four Courts 2004), edited by Irish poet Sabine Wichert.