Cognomen Tirc (Tirc 
) , in the entire world, is a very rare last name. The family name Tirc is characteristic of Romania, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Tirc | Romania, United States |
| lan tirc Slovenian footballer, SI (b. 1994) |
|