Tilly Metz is a Luxembourgish politician and Member of the European Parliament for The Greens/EFA since 2018.  She chaired the Delegation for relations with Central American countries (DCAM). Moreover, she was a permanent member of the Committee on the Environment, Public Health and Food Safety (ENVI), the Committee on Transport and Tourism (TRAN), and the Delegation to the Euro-Latin American Parliamentary Assembly (DLAT).

Prior to her appointment as a Member of the European Parliament, she worked as a teacher of humanities and social sciences, and as the mayor of the municipality of Weiler-la-Tour.