Surname Troiline (Troiline 
, Троилин 
) , in all the world, is a rare cognomen. The surname Troiline is characteristic of Eastern Europe, particularly Belarus, where it is a rare surname, Russia, and Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Troiline | United States |
| Троилин | Ukraine, Russia, Belarus |