Gwendolyn Sasse (born 21 February 1972 in Glinde, Schleswig-Holstein, Germany) is professor of comparative politics at Nuffield College, University of Oxford. Sasse has research interests in post-communist transitions; comparative democratisation; ethnic conflicts; international conditionality; national minorities; the political behaviour of migrants; diaspora politics; and the political in contemporary art.^[1] Since 1 October 2016 Sasse has been the director of the Centre for East European and International Studies [de] (ZOiS) in Berlin.^[2]

Sasse won the Alexander Nove Prize of the British Association for Slavonic & East European Studies for her book The Crimea Question: Identity, Transition, and Conflict (2007).

• Sasse, Gwendolyn; Hughes, James, eds. (2002). Ethnicity and Territory in the Former Soviet Union: Regions in Conflict. Cass series in regional and federal studies. London, Portland, Oregon: Frank Cass. ISBN 9780714682105.
• with Hughes, James; Gordon, Claire E. (2004). Europeanization and Regionalization in the EU's Enlargement to Central and Eastern Europe: The Myth of Conditionality. Series: One Europe or several?. Houndmills, Basingstoke, Hampshire New York: Palgrave Macmillan. ISBN 9781403939876.
• — (2007). The Crimea Question: Identity, Transition, and Conflict. Harvard series in Ukrainian studies. Cambridge, Massachusetts: Distributed by Harvard University Press for the Harvard Ukrainian Research Institute. ISBN 9781932650129.
• — (2022). Der Krieg gegen die Ukraine. Hintergründe, Ereignisse, Folgen. C. H. Beck Wissen (in German) (2nd ed.). Munich: C. H. Beck. ISBN 978-3-406-79305-9.