Last name Katyon (Cation 
, Katyon) , in the entire world, is a rare surname. The last name Katyon is habitual in Canada, where it is a rare surname, Australia, and the United Kingdom, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in the United States, Canada, and the United Kingdom. Much less frequently, Katyon is the forename as well as the last name.