Sigrid Jahns (née Langer) (born on 26 October 1945) is a German historian.
Born in Malente, the daughter of a physician, after her Abitur in Osnabrück in 1965, Jahns began studying history, philology, philosophy and pedagogy, which she continued at the Christian-Albrechts-Universität zu Kiel in 1967 and at the Goethe University Frankfurt in 1968.
In 1972, she received her doctorate in philosophy from Friedrich Hermann Schubert in Frankfurt with a dissertation entitled Frankfurt, Reformation and Schmalkaldic League - the Reformation, Reich and Alliance Politics of the Imperial City of Frankfurt am Main 1525-1536.
[1] After a subsequent stay abroad and a Referendariat [de] at a Bad Homburger Gymnasium, Jahns supervised the sub-project Zusammensetzung und Sozialbeziehungen des Reichskammergerichts 1548-1806 from 1975 as a research assistant to Volker Press at the Justus-Liebig-Universität Gießen, which produced her two-part habilitation thesis Das Reichskammergericht und seine Richter.
Verfassung und Sozialstruktur eines höchsten Gerichts im Alten Reich, which deals with the lawyers at the Reichskammergericht from the perspective of social and constitutional history.