Anton Heyboer ( 9 February 1924 – 9 April 2005) was a Dutch painter and printmaker.
September 1957 an exhibition in Galerie Espace led to the purchase of Heyboer's works by the Stedelijk Museum, the MOMA and the Brooklyn Museum of Art.This launched his career as an artist.
In the 1960s, Heyboer's art began to receive international recognition. He was a loyal client of the Galerie Espace and participated in various exhibitions recommended by them. He showed works in the Documenta 2 in 1959, the Documenta 3 (1964), and the Documenta 4 (1969) in Kassel, each in the department of graphic arts. In 1962 he received the Ohara Museum Prize in the 3rd International Biennale of Prints in Tokyo, Japan, and in 1964 the "Accademia Fiorentina delle arte del disegno" of Florence made him "Academico Onorario classe incisione".
On 10 April 2002 Heyboer was awarded the honorary title Ridder in de Orde van Oranje-Nassau.
His most valued works are considered to be from his earlier years from the late 1950s, 1960s and 1970s, before he formally broke with the art world.