Cognomen Koryon (Koryon 
) , all around the world, is a rare last name. The last name Koryon is characteristic of Liberia, where it is quite a rare surname, the United States, where it is an extremely rare surname, and Canada. Not in comparison with a country's population, it most frequently occurs in Liberia, the United States, and Nigeria. Very seldom, Koryon is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Koryon | Canada, Liberia, India, Nigeria, United States |