Guido Dessauer (7 November 1915 – 13 January 2012) was a German physicist, pioneer in paper engineering, business executive, writer, art collector, patron of the arts, and academic. Born into a family of paper industrialists, he worked as an aerospace engineer during World War II and was an executive of the family's coloured paper factory in Aschaffenburg from 1945. He was an honorary citizen of Austria for saving 300 jobs in Styria in the 1960s. He earned a Ph.D. from the Graz University of Technology in his late 50s and became an honorary professor there. Interested in art, he collected bozzetti (models for sculpture) for 50 years and initiated the career of Horst Janssen as a lithographer.