Single-authored Books on politics and contemporary history

• Gallagher, Tom (1979). Dictatorial Portugal, 1926-1974: a bibliography. Published under the auspices of the International Conference Grp. on Modern Portugal c/o Dept. of History, University of New Hampshire. OCLC 12285411.
• Gallagher, Tom (1983). Portugal : a twentieth-century interpretation. Manchester University Press. ISBN 9780719008764.
• Gallagher, Tom (1987). Glasgow, the uneasy peace : religious tension in modern Scotland, 1819-1914. Manchester University Press. ISBN 9780719023965.
• Gallagher, Tom (1987). Edinburgh divided : John Cormack and no popery in the 1930s. Polygon. ISBN 978-0948275401.
• Gallagher, Tom (1995). Romania after Ceaușescu : the politics of intolerance. Edinburgh University Press. ISBN 9780748606139.
• Gallagher, Tom (2001). Outcast Europe : the Balkans, 1789-1989, from the Ottomans to Milošević. Routledge. ISBN 0415270898.
• Gallagher, Tom (2003). The Balkans after the Cold War : from tyranny to tragedy. Routledge. ISBN 0415277639.
• Gallagher, Tom (2005). The Balkans in the new millennium : in the shadow of war and peace. Routledge. ISBN 9780415349406.
• Gallagher, Tom (2005). Theft of a nation : Romania since communism. Hurst & Co. ISBN 9781850657163.
• Gallager, Tom (2009). The illusion of freedom : Scotland under nationalism. Hurst. ISBN 9781850659952.
• Gallagher, Tom (2009). Romania and the European Union: how the weak vanquished the strong. Manchester University Press. ISBN 978-0-7190-7743-2.
• Gallagher, Tom (2013). Divided Scotland: Ethnic Friction and Christian Crisis. Argyll. ISBN 978-1-908931-28-3.
• Gallagher, Tom (2014). Europe's Path to Crisis: Disintegration via Monetary Union. Manchester University Press. ISBN 978-0-7190-9604-4.
• Gallagher, Tom (2015). Scotland now : a warning to the world. Scotview Publications. ISBN 978-0993465406.
• Gallagher, Tom (2020). SALAZAR : the dictator who refused to die. C HURST & CO PUB LTD. ISBN 978-1787383883.

Novels

• Gallagher, Tom (2018). Flight of Evil, A North British Intrigue. Scotview Publications.
• Gallagher, Tom (2018). England Possessed. Scotview Publications. Retrieved 7 June 2020.

Selected edited volumes

• Pridham, Geoffrey; Gallagher, Tom; Pridham, Professor of European Politics and Director Centre for Mediterranean Studies Geoffrey (2000). Experimenting with Democracy: Regime Change in the Balkans. Routledge. ISBN 978-0-415-18726-8.
• Gallagher, Tom; Williams, Allan M. (1989). Southern European Socialism: Parties, Elections, and the Challenge of Government. Manchester University Press. ISBN 978-0-7190-2500-6.
• Walker, Graham (1990). Gallagher, Tom (ed.). Sermons and battle hymns: Protestant popular culture in modern Scotland. Edinburgh University Press. ISBN 978-0-7486-0217-9.

Other

• Gallagher, Tom (1990). Blinkhorn, Martin (ed.). Fascists and conservatives : the radical right and the establishment in twentieth-century Europe. Unwin Hyman. pp. 157–176. ISBN 004940086X. Retrieved 7 June 2020.
• Gallgher, Tom (1996). "Chapter 4 - Portugal". In Buchanan, Tom; Conway, Martin (eds.). Political Catholicism in Europe, 1918-1965. Clarendon Press ; Oxford University Press. ISBN 978-0-19-820319-3. OCLC 807023238.

Selected articles

• Gallagher, Tom (1979). "The Portuguese Communist Party and Eurocommunism". The Political Quarterly. 50 (2): 205–218. doi:10.1111/j.1467-923X.1979.tb02452.x. ISSN 1467-923X.
• Gallagher, Tom (1979). "Controlled Repression in Salazar's Portugal". Journal of Contemporary History. 14 (3): 385–402. doi:10.1177/002200947901400302. S2CID 153579115.
• Gallagher, Tom (September 2018). "Salazar: Portugal's Great Dictator". History Today. 68 (9).

• "TGP Gallagher Emeritus Professor". University of Bradford. University of Bradford. Retrieved 7 June 2020.
• Articles by Tom Gallagher at The Commentator