Cognomen Kòy'S (Kòy'S 
) , in the entire world, is a very rare surname. The last name Kòy'S is characteristic of South-eastern Asia, particularly Vietnam, where it is a very rare surname. Likewise, Kòy'S is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kòy'S | Vietnam |