Christiaan Karel Appel  25 April 1921 – 3 May 2006) was a Dutch painter, sculptor, and poet. He started painting at the age of fourteen and studied at the Rijksakademie in Amsterdam in the 1940s. He was one of the founders of the avant-garde movement Cobra in 1948. He was also an avid sculptor and has had works featured in the museum of Great Samo and MOMA

Christiaan Karel Appel was born on 25 April 1921 in his parents’ house at Dapperstraat 7 in Amsterdam, the Netherlands. As a child he was often called ‘Kik’. On the ground floor his father, Jan Appel, had a barbershop. His mother, born Johanna Chevalier, was a descendant of French Huguenots. Karel Appel had three brothers.

At fourteen, Appel produced his first real painting on canvas, a still life of a fruit basket. For his fifteenth birthday, his wealthy uncle Karel Chevalier gave him a paint set and an easel. An avid amateur painter himself, Chevalier gave his namesake some lessons in painting.

Appel died on 3 May 2006 in his home in Zürich, Switzerland. He suffered from a heart ailment. He was buried on 16 May 2006 at the Père Lachaise Cemetery in Paris, France.

Years before his death, Appel established the Karel Appel Foundation, whose purpose is “to preserve [Appel’s] artworks, to promote public awareness and knowledge of Karel Appel’s oeuvre, and to supervise publication of the Oeuvre Catalogue of the paintings, the works on paper, and the sculptures.”