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. 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. 