Claudia Märtl (born 3 July 1954 in Amberg) is a German historian.
She is a professor of Medieval history at the Ludwig Maximilian University of Munich.
In March 2011 she was elected to succeed Rudolf Schieffer as President of the Monumenta Germaniae Historica.
On March 31, 2014, she resigned as president after a very vehement protest against the savings measures of the Free State of Bavaria and reform demands from the State Ministry for Education, Culture, Science and Art, which was taken over by Ludwig Spaenle (CSU).
With her presentation of the "101 most important questions" ("101 wichtigsten Fragen"), she became known to a wider audience, to whom she easily introduced the Middle Ages.