Klaus Zimmermann (born 8 February 1964 in Würzburg) is a German ancient historian.
After his military service, Zimmermann began his studies at the University of Bamberg in 1985/6.
From 1994 until 1998 he was scholarly assistant at the Commission for Ancient History and Epigraphy in the German Archaeological Institute in Munich.
On 1 October 2009 he succeeded Elmar Schwertheim in the research position for Asia Minor in the seminar for ancient history at University of Münster.
His research focusses are religion in politics / politics in religion, the appropriation of social memory by the church as an institution and the day-to-day experience of death and dying in the Imperial period and Late Antiquity.