Sebastian Brather (born 28 June 1964) is a German medieval archaeologist and co-editor of Germanische Altertumskunde Online.

In 2002 his habilitation thesis in University of Freiburg was Ethnische Interpretationen in der frühgeschichtlichen Archäologie: Geschichte, Grundlagen und Alternativen.

In the next two years worked as research assistant at Goethe University in Frankfurt and Main, to return to Freiburg where taught as a holder of GRF scholarship.

Brather has conducted much research on the archaeology of late antiquity and Middle Ages especially about the West Slavs.

Brather in a similar fashion of processual archaeology considers ethnic identity to be a social construct which is out of reach of archaeology and argues against culture-historical methodology of easily making direct links between material culture and ethnic identities.