Institut Le Rosey (French pronunciation: [ɛ̃stity lə ʁozɛ]), commonly referred to as Le Rosey or simply Rosey, is a private boarding school in Rolle, Switzerland. It was founded in 1880 by Paul-Émile Carnal on the site of the 14th-century Château du Rosey in the town of Rolle in the canton of Vaud.

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. In 2015, Christophe Gudin, son of the fourth director of Le Rosey, Philippe Gudin, became the fifth director. Kim Kovacevic is the headmaster.

Le Rosey is included in The Schools Index of the world's 150 best private schools and among top 10 international schools in Switzerland.