Malleus (Latin for "hammer") is a bone in the middle ear.
Malleus may also refer to: Malleus (bivalve), a genus of bivalves Malleus (disease), a bacterial infection Malleus Maleficarum (Hammer of Witches), an early modern European treatise on witches
See also Malleus Scotorum ("Hammer of the Scots"), byname of King Edward I of England Malleolus, a structure in mammalian skeletal anatomy Malleolus (arthropod), an external organ chemoreceptor found in Solpugidae