Piet Sielck (born 14 November 1964) is a German guitarist, singer and record producer.

He is the frontman of the power metal band Iron Savior as well as owner of the studio Powerhouse in Hamburg.

In 1982, he left the band and worked first as a technician, then traveled for one year to Los Angeles.

After his return, he began his career as a producer; his first production was Heading for Tomorrow, the debut album of Gamma Ray, the new band of his old friend Hansen.

In 1996, Sielck created his own band, Iron Savior, together with Hansen and Blind Guardian's then-drummer Thomen Stauch.