Family name Machun (Mason 
, Machin , Machen ) , across the world, is a widespread cognomen. The surname Machun is habitual in Isle of Man, where it is a common surname, Antigua and Barbuda, and New Zealand (explore the name in all countries). Measured by absolute frequency, it is commonest in the United States, the United Kingdom, and Australia. Very seldom, Machun is the forename as well as the last name.