Marjan Petković (born 22 May 1979 in Brackenheim) is a German football player of Serbian descent. He currently plays for Eintracht Braunschweig.
He made his debut on the professional league level in the 2. Bundesliga with FSV Frankfurt on 1 March 2009 when he came on as a substitute in the 65th minute after the main goalkeeper Patric Klandt was sent off for a professional foul. Petković left FSV Frankfurt after one season to join Eintracht Braunschweig in the 3. Liga. In 2010–11, he was Braunschweig's starting goalkeeper when the club won promotion back into the 2. Bundesliga. Because of an injury, Petković lost his starting spot to Daniel Davari early in the 2011–12 2. Bundesliga season. During the 2012–13 2. Bundesliga season, he made four league appearances throughout the campaign when Braunschweig won promotion to the Bundesliga. On the first matchday of the 2013–14 Bundesliga season, Petković then made his debut in the first tier, getting the start over Davari in Braunschweig's opening game against SV Werder Bremen.