Marcus Siepen (born September 8th 1968 in Krefeld, Germany) is one of two guitarists in the Power/Speed Metal band Blind Guardian. For the biggest percentage of Blind Guardian's songs, particularly in more recent years, he has almost strictly played rhythm guitar, with most lead and solo work being performed by André Olbrich. He has also made a far lesser contribution to the band's songwriting than Olbrich, who splits most of the writing with vocalist Hansi Kürsch.

Read more about Marcus Siepen on Last.fm.