Marcus Siepen

This biography of a living person needs additional citations for verification. Please help by adding reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately from the article and its talk page, especially if potentially libelous. Find sources: "Marcus Siepen" – news · newspapers · books · scholar · JSTOR (November 2021) (Learn how and when to remove this message)

Marcus Siepen
Siepen in 2016
Background information
Born	(1968-09-08) 8 September 1968 (age 56) Krefeld/Hüls, West Germany
Genres	Power metal, speed metal, heavy metal
Occupations	Guitarist
Years active	1984–present
Labels	No Remorse, Virgin, Century Media, Nuclear Blast
Website	marcussiepen.com

Marcus Siepen (born 8 September 1968) is a German guitarist, best known as the rhythm guitarist and backing vocalist of power 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 been part of the band Sinbreed and live member of Demons & Wizards.