Family name Twardus (Twardus 
) , worldwide, is a rare last name. The family name Twardus is habitual in Poland, where it is a rare surname, the United States, where it is a very rare surname, and Canada. Also, Twardus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Twardus | Poland, Canada, United States |