Cognomen Juwer (Juwer 
) , all around the world, is a rare surname. The family name Juwer is characteristic of Brazil, where it is a rare surname, Nigeria, where it is a very rare surname, and Germany, where it is an extremely rare surname. In absolute terms, it is commonest in Brazil, Nigeria, and India. Much less frequently, Juwer is the forename as well as the last name.