Cognomen Masayuk (Masayuk 
) , globally, is an extremely rare family name. The cognomen Masayuk is characteristic of Spain, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. More frequently, Masayuk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Masayuk | Japan, Spain, Malaysia |