Saint Mary's Battery (Marsalforn)

Saint Mary's Battery (Batterija ta' Santa Marija), also known as Qolla s-Safra Battery (Batterija tal-Qolla s-Safra), was an artillery battery in Marsalforn, limits of Żebbuġ, Gozo, Malta. It was built by the Order of Saint John in 1715 as one of a series of coastal fortifications around the Maltese Islands.

The battery formed part of a chain of fortifications built to defend Marsalforn and nearby bays from Ottoman or Barbary attacks. Although the area was fortified by a number of towers, batteries, redoubts and entrenchments, all of these have been destroyed except for Qolla l-Bajda Battery between Qbajjar and Xwejni Bays.

The battery consisted of a semi-circular gun platform ringed by a parapet, and two blockhouses joined together by a wall. It has been demolished and no remains can be seen.