Cognomen Gumush (Gumush 
) , all over the world, is a very rare family name. The surname Gumush is habitual in Georgia, where it is a rare surname, Estonia, and New Zealand, where it is a very rare surname. In absolute terms, it is the most numerous in Georgia, the United Kingdom, and Nigeria. Very seldom, Gumush is the forename as well as the last name.