Family name Kertyn (Kertyn 
) , in the world, is an extremely rare cognomen. The family name Kertyn is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is a rare surname, and Venezuela, where it is an extremely rare surname. Likewise, Kertyn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kertyn | Nicaragua, Venezuela |