Last name Terentiy (Терентий 
, Терентиы , Terentiy 
) , in the world, is a very rare family name. The surname Terentiy is habitual in Kyrgyzstan, where it is a very rare surname, Portugal, and Russia. More frequently, Terentiy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Терентий | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Терентиы | Russia |
| Terentiy | United States, Portugal, Russia |