Yvan Delporte (24 June 1928 – 5 March 2007) was a Belgian comics writer, and was editor-in-chief of Spirou magazine between 1955 and 1968 during a period considered by many the golden age of Franco-Belgian comics. He is credited with several creative contributions, among these his collaborations with Peyo on The Smurfs, with René Follet on Steve Severin (1/2) and André Franquin with the creation of Gaston Lagaffe and the co-authorship of Idées noires.