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All over the world, Reg (Reg , 雷格 , ريج ) is quite a common primarily masculine, but very infrequently girly first name. The first name Reg is characteristic of Canada, where it is quite a common masculine name, Australia, where it is quite a rare masculine name, and New Zealand, where it is quite a rare predominantly male, but very seldom female name. In absolute terms, it is the most numerous in Canada, Australia, and the United States. Very seldom, Reg is the last name as well as the forename.
Reg is also a name for the fictitious and mythical characters: Reginald Cattermole , character in Harry Potter and the Deathly Hallows – Part 1 and Reg Monroe , the Fictional character in the television series, The Walking Dead.