The Collège en Isle (in Latin: Gymnasium Societatis Iesu in insula, Leodii), also known as the Collège en Île or the Collège des Jésuites wallons, was a Jesuit secondary school located on what was then the Île de la Meuse (an island in the Meuse River) within the Principality of Liège. It was founded in 1582 and operated until the suppression of the Society of Jesus in 1773, at which point it passed into other hands. Its pedagogical tradition was later continued by the Collège Saint-Servais, which was founded in Liège in 1828.
The institution's Latin name refers to its location in insula ("on the island"), reflecting its original site on an island in the Meuse. The school was one of two Jesuit colleges established in Liège during the 16th century, the other being the Collège des Anglais (English College). The building complex included multiple wings, a chapel, classrooms, a dormitory, and a large hall featuring a glass-and-metal structure reminiscent of the style of the Eiffel Tower.
