Marc Chardonnens (1960 – 6 April 2020) was a Swiss government official. He worked at the Federal Office for Environmental Protection from 1987 to 2004, then at the Federal Office for the Environment, Forests and Landscape.[1] In 2004, he was appointed as head of the environmental department of the Canton of Fribourg. He chaired the conférence des chefs des services de la protection de l'environnement from 2011 to 2015.