Jan Bremmer (PhD in Classics 1979, Free University Amsterdam) is Professor Emeritus of Science of Religion and Comparative Religious Studies at the University of Groningen.

In the Winter Term 2025/26, he was a POLY Writing Fellow in the Writing Group "Seeking Salvation." During the group's meetings at Forschungskolleg Humanwissenschaften Bad Homburg in November 2025 and April 2026, he developed his contribution to the first volume of POLY's forthcoming three-volume book project, Doing Christianity: A Praxeological Guide to Polycentricity and Plurality of Premodern Christianities.