Xosé Manoel Núñez Seixas (born 1966) is a Spanish historian who specializes in nationalism studies, the cultural history of war and violence, and migration studies.

He earned a PhD in contemporary history from the European University Institute in 1992,[2] reading a dissertation titled El problema de las nacionalidades en la Europa de entreguerras: El Congreso de Nacionalidades Europeas (1925-1938) supervised by Heinz-Gerhard Haupt and Stuart J. Woolf[3].

Following a hiatus as a full professor of Modern European History at the Ludwig Maximilian University of Munich from 2012 to 2017, he returned to his post at the USC.

[3] Since July 2018, he is vice-president of the Council of Galician Culture [gl].

Fluent in several European and world languages, he is also a member of the editorial board of the history journals "Studies on National Movements", Historia Social and Passato e Presente, as well as a member of the International Advisory Board of European History Quarterly, Ayer, Anuario del IEHS, Estudos Iberoamericanos, Spagna Contemporanea, "Análise Social", "Journal of Iberian and Latin American Studies", and Historia y Política, among others.