Horst Weigelt (1934 – August 2024) was a German Protestant theologian.
From 1975 to 2002 he was Professor of Historical and Systematic Theology at the Otto Friedrich University of Bamberg.
His research focuses on the Reformation, Pietism and Enlightenment in the early modern period.
In 1962 he was ordained in the Evangelical Lutheran Church in Bavaria.
In 1975 he received the chair for historical and systematic theology at the Otto Friedrich University in Bamberg and was also lecturer in Bavarian church history at the Friedrich Alexander University in Erlangen-Nuremberg.