Cyrielle Chatelain is a French politician currently serving as a Deputy for Isère's 2nd constituency, a position she won in the 2022 legislative elections as part of the New Ecological and Social People's Union (NUPES) coalition. She is also the President of the Ecologist Group in the National Assembly, having initially been elected co-president in June 2022 before becoming sole president in September 2022. She is affiliated with The Ecologists (EELV).