The Royal Carillon School "Jef Denyn" (Dutch: Koninklijke Beiaardschool "Jef Denyn"; informally also the Mechelen carillon school) is a music school in Mechelen, Belgium, that specializes in the carillon. It is the first and largest carillon school in the world. The Belgian government defines it as an "International Higher Institute for the Carillon Arts under the High Protection of Her Majesty Queen Fabiola". The school has trained many of the foremost carillonneurs of the twentieth and twenty-first centuries and houses a rich archive and library.