Cognomen Glash (Glash 
) , around the globe, is a very rare family name. The family name Glash is habitual in Australia, where it is a very rare surname, the United States, where it is an extremely rare surname, and Malaysia. Not in comparison with a country's population, the name is most common in the United States, Australia, and India. Very seldom, Glash is the forename as well as the last name.