Tobias van Dieken (born 1980 in Bonn) is a German actor active in both theater and television.

Tobias van Dieken grew up in North Rhine-Westphalia and completed his acting training from 2000 to 2004 at the renowned Otto Falckenberg School in Munich. This was followed by engagements at various German theaters, including the Schauspielhaus Wuppertal and Theater Bonn. Since 2003, he has been a member of the ensemble at the Münchner Volkstheater.