German dramaturg Marion Tiedtke made her Royal Opera debut in 2009 on Tristan und Isolde, directed by Christof Loy.
Tiedtke was born in Cologne and studied philosophy, German and history in Freiburg and Berlin. Her theatre career began in 1989 when she became assistant dramaturg to Peter Stein and Klaus Michael Grüber at the Schaubüne, Berlin. She has since worked for theatres such as the Berlin Schiller Theatre, the Bremen Theatre, the Bavarian State Theatre and for the Burgtheater, Vienna. She was dramaturg at the Munich Kammerspiele 2001–07, during which time she also taught theatre analysis and history and dramaturgy at Munich University and the Bavarian Theatre Academy. She has worked as dramaturg to many leading theatre directors, including Roberto Ciulli, Andreas Kriegenburg, Martin Kušej, Alexander Lang, Konstanze Lauterbach, Amélie Niermeyer, Luk Perceval, Thomas Ostermeier, Johan Simons and Roger Vontobel. Her opera engagements include La clemenza di Tito (Salzburg Festival, directed by Kušej), Lady Macbeth of Mtsensk (Amsterdam, directed by Kušej) and the Ring cycle, co-credit with Miron Hakenbeck and Olaf A. Schmitt (Bavarian State Opera, directed by Kriegenburg).
Since 2007 Tiedtke has been Professor and Director of Theatre at the University of Music and the Performing Art in Frankfurt am Main, and was Dean of the Faculty of Performing Arts there 2011–14. She is a member of the Hessian Film and Media Academy and of the Berlin Academy of Performing Arts, and since 2014 has been on the jury for the Gertrud-Eysoldt-Ring theatre prize.