Günther Uecker, also known as Guenther Uecker, (born 13 March 1930) is a German sculptor, op artist and installation artist.
With Otto Piene, Heinz Mack and Mattijs Visser he founded in 2008 the international ZERO foundation. The foundation has the complete ZERO archives from three Düsseldorfer artists as well as documents and photos from other related artists.
At Art Basel in 2014, art dealer Dominique Lévy sold Uecker’s suite of eight white paintings for more than 5 million euros. In a 2017 Christie’s Post-War Auction Gunther’s Spirale 1/ Spirale 2 sold for an artist auction record of 3.2 million dollars.