The Collegiate Church of Notre-Dame (Collégiale Notre-Dame de Melun) is a church in the French town of Melun, on rue de la Courtille on the île Saint-Etienne. Formerly a collegiate church, it was founded between 1016 and 1031 by Robert II of France. Until around 1775 it housed the 1450 Melun Diptych and in 1840 it was made a monument historique.