Cognomen Tierza (Tierza 
) , across the world, is a very rare surname. The last name Tierza is habitual in Indonesia, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Tierza is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tierza | Spain, Canada, Philippines, United States, Indonesia |