Léonie (Lily) Unden (26 February 1908 – 5 September 1989) was a Luxembourgish poet, painter and educator who was sent to the Ravensbrück concentration camp for taking part in the Luxembourg Resistance during the Second World War.
She became a member of the Luxembourg Resistance but was arrested by the Gestapo on 3 November 1942 and eventually sent to the Ravensbrück concentration camp.
[2][4] She returned to Luxembourg after being liberated in 1945 and taught at the Lycée de jeunes filles or Girls' High School.
In 1949, she taught French at the École professionnelle de l'État in Esch-sur-Alzette until she was engaged to teach at the Lycée Robert-Schuman (1966–1973).
[1] As an artist, in addition to her still lifes and landscapes, she illustrated poetry collections, including those of Cécile Ries and Anne Berger (born 1951).