Josep Maria Colomer Calsina is a political scientist and economist. His research focuses on the strategies for the design, establishment, and change of political institutions. Topics include the processes of democratization, the origins of parliamentary and separation of powers regimes, the invention of electoral systems and voting rules, the development of nations and empires such as the United States and the European Union, and the increasing role of global institutions.

Josep Colomer is currently an Associate Researcher at the School of Foreign Service of Georgetown University in Washington and the Institute of Political and Social Sciences of the Autonomous University of Barcelona. He is a member by election of the Academia Europaea, was a founding member of the Spanish Political Science Association (AECPA), and has been awarded life membership to the American Political Science Association and the Mexican Association of Political Sciences.

• Colomer, Josep M. (2023). Constitutional Polarization. A Critical Review of the US Political System. Routledge. ISBN 9781032495224.
• Colomer, Josep M.; Beale, Ashley L. (2020). Democracy and Globalization: Anger, Fear, and Hope. Routledge. ISBN 9780367461928.
• Colomer, Josep (2019). The Spanish Frustration: How a ruinous empire thwarted the nation-state. Anthem Press. ISBN 9781783089888.
• Colomer, Josep (2011). The Science of Politics: An Introduction. Oxford University Press. ISBN 9780195397741.
• Colomer, Josep (2014). How Global Institutions Rule the World. Palgrave Macmillan. ISBN 978-1-349-50173-1.
• Colomer, Josep, ed. (2011). Personal Representation : The neglected dimension of electoral systems. ECPR Press. {{cite book}}: |website= ignored (help)
• Colomer, Josep (ed.). Comparative European Politics (3rd 2008 ed.). Routledge.
• Colomer, Josep (2008). Great Empires, Small Nations: The Uncertain Future of the Sovereign State. Routledge.
• Colomer, Josep (2003). Political Institutions. Democracy and' Social Choice. Comparative Politics. Oxford University Press. ISBN 978-0-19-924184-2.
• Colomer, Josep M, ed. (2004). The Handbook of Electoral System Choice. Palgrave Macmillan UK. ISBN 978-1-349-50942-3 – via www.palgrave.com.
• Colomer, Josep. Strategic Transitions. Game Theory and Democratization. Johns Hopkins University Press. ISBN 9780801875069.
• Colomer, Josep M. (1998). "The Spanish 'state of autonomies': Non-institutional federalism". West European Politics. 21 (4): 40–52. doi:10.1080/01402389808425270.
• Game Theory and the Transition to Democracy: The Spanish model. Edward Elgar. 1995. ISBN 978-1858982014.

• "Academy of Europe: Colomer Josep". www.ae-info.org.
• "Faculty". gufaculty360.georgetown.edu.

• Official website