Family name Thayrin (Thayrin 
) , globally, is an extremely rare surname. The last name Thayrin is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is a very rare surname, and Venezuela. Also, Thayrin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thayrin | Brazil, United States, Nicaragua, Venezuela, Costa Rica |