Rudolf Kortokraks was a German painter from Ludwigshafen, Rhein.
Kortokraks attended an art school in Graz in 1941, and moved to the Worpswede artist colony in 1949, where he first took part in exhibitions.
His paintings depict still life (particularly flowers), landscapes, cities and portraits. He had his first one-man exhibition in 1951. In 1954, Kortokraks joined the School of Vision, part of the international Summer Academy in Salzburg, as a teaching assistant to Oskar Kokoschka.
From 1956 until the collapse of the school in 1963, Kortokraks was Kokoschka"s chief assistant at the School of Vision.
Kokoschka granted Kortokraks the exclusive right to use the title "School of Vision". Kortokraks had several exhibitions in Mexico and New York in 1969.
In 1976, he returned to the newly reformed School of Vision, in the Salzburg Summer Academy. In 1981, Kortokraks founded the School of Vision in Tuscania, Lazio, Italy.
In 2008 Kortokraks marked his eightieth birthday with a large exhibition in Salzburg.
In 2012 a documentary feature film about Kortokraks was released in Austria. In March 2013, mayor Heinz Schaden awarded him the gold seal of Salzburg. Kortokraks is considered "the last important representative of late Expressionism".
Kortokraks died on 11 September 2014 at the age of 86.