Cognomen Тяро (Tiaro 
, Tyaro , Тяро 
) , in the entire world, is a very rare last name. The family name Тяро is characteristic of Russia, where it is a very rare surname, Philippines, and India, where it is an extremely rare surname. More frequently, Тяро is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tiaro | Spain, Philippines, Indonesia, India, Brazil |
| Tyaro | Brazil, India |
| Тяро | Russia |