Studied at the "Ernst Busch" Academy of Fine Arts in Berlin. For his first film work, the main role as the computer-hacker Karl Koch in 23 - NICHTS IST SO WIE ES SCHEINT (1998) he received the "German Filmpreis" as best performer. Numerous other film roles as well as theatrical works and further awards followed. Films: INGLORIOUS BASTARDS (2009), SALT (2010), DIE KOMMENDEN TAGE (2010), WER WENN NICHT WIR (2011). August Diehl is an ensemble member at the Burgtheater in Vienna.