Qolla l-Bajda Battery (Maltese: Batterija tal-Qolla l-Bajda or Fortina tal-Qolla l-Bajda) is an artillery battery in Żebbuġ, Gozo, Malta. It was built by the Order of Saint John between 1715 and 1716 as one of a series of coastal fortifications around the coasts of the Maltese Islands. It retained its original layout until the late 1970s, when it was converted into a discothèque and snack bar known as Rook and major alterations were made to the battery. The building is now abandoned and in a dilapidated state, being in the midst of a legal battle between the government and a private company.