Karl Hug (22 June 1899, St. Gallen - 7 May 1979, Zurich), known as Charles Hug, was a Swiss painter, draftsman and book illustrator. Karl Hug spent his childhood and youth in St. Gallen. After school, he had to start a mechanical engineering apprenticeship in a printing company, which he broke off after a year. He earned his living as a construction worker and attended evening classes at the business school, first in the structural engineering, later in the decorative department. From 1920, Hug worked as a typographer in Geneva.