Jacob Hansen (born in Ribe, Denmark) is a Danish heavy metal producer, engineer, guitarist, bassist, drummer and vocalist.

[1][2][3] He also founded the technical thrash metal band Invocator, for which he has served as singer/guitarist since 1987.

[4] Since 2011, he is also a member of power metal-band Pyramaze.

Hansen has produced, engineered, mixed and mastered some of the biggest acts in alternative and heavy music.

Credits include: Amaranthe,[5] Volbeat, Dizzy Mizz Lizzy, The Black Dahlia Murder, Pretty Maids, Epica, Primal Fear, and Evergrey.