Institut Le Rosey, commonly referred to as Le Rosey or simply Rosey, is a boarding school in Rolle, Switzerland. It was founded by Paul-Émile Carnal in 1880 on the site of the 14th-century Château du Rosey in the town of Rolle in the Canton of Vaud. It is one of the oldest boarding schools in Switzerland. The school also owns a campus in the ski resort village of Gstaad in the Canton of Bern, to where the student body, faculty, and staff move during the months of January through March.