Cognomen Merlyon (Merlin 
, Merlyon ) , around the world, is a common last name. The family name Merlyon is characteristic of Honduras, where it is quite a common surname, France, and Cameroon. Measured by absolute frequency, this name is the most popular in France, Honduras, and Mexico. Also, Merlyon is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Merlin | Cameroon, Honduras, United States, France, Democratic Republic of the Congo |
| Merlyon | United States |