Dieter Mann (20 June 1941 – 3 February 2022) was a German actor, director, university professor, and radio personality.

[2] From 1964 to 2006, during his time at the Deutsches Theater Berlin, Mann portrayed the Templar in Gotthold Ephraim Lessing's Nathan the Wise, the lead role in Clavigo and Edgar Wibeau in Die neuen Leiden des jungen W..[4][5] He also portrayed Demetrius in a German production of A Midsummer Night's Dream.

He had guest appearances on the television series such as AS – Danger is his business, Peter Strohm, Tresko, Ein starkes Team, Stubbe – Von Fall zu Fall, In aller Freundschaft, Rosa Roth, Bella Block and several times in Tatort.

[1] Mann played the role of Generalfeldmarschall Wilhelm Keitel in the Academy Award-nominated 2004 film Downfall.

[10] His final roles were in the 2011 drama Way Home [de] and in the 2014 television comedy film Die letzten Millionen.