Hans Günter Merz, better known as HG Merz (born 1947 in Tailfingen) is a German architect and museum designer. He is the founder and director of hg merz architekten museumsgestalter, an architecture office that specializes in museum and exhibition design and in refurbishing listed buildings. The office has branches in Stuttgart and Berlin. HG Merz was president of the University Council of Bauhaus University Weimar from 2013-2017.