Cognomen Terlyn (Terlyn 
) , in all the world, is a very rare surname. The family name Terlyn is habitual in Latin America and the Caribbean, particularly Honduras, where it is a rare surname, Nicaragua, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. More prevalently, Terlyn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Terlyn | Philippines, Venezuela, Nicaragua, United States, Honduras |