Günter Fruhtrunk (1 May 1923 – 12 December 1982) was a German geometric abstract painter and printmaker whose work relates to op art.
In 1945, Fruhtrunk began to study privately under the painter and printmaker William Straube [de] in Neufrach, who was a student of Adolf Hölzel and Henri Matisse.
In 1954 he received a scholarship from the state Baden-Württemberg and the French government and moved to Paris to work in the studios of Fernand Léger and Jean Arp.
In 1963 he appeared in the film documentary School of Paris: (5 Artists at Work) by American filmmaker Warren Forma.
His most conspicuous work was the plastic shopping bag he designed in the early 1970s for Aldi Nord; its use was discontinued in late 2018.