Cognomen Аллерт (Allert 
, Аллерт 
) , around the world, is quite a rare last name. The last name Аллерт is habitual in Trinidad and Tobago, where it is quite a rare surname, Sweden, and Estonia. In absolute terms, it is commonest in Germany, the United States, and Sweden. Much less frequently, Аллерт is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Allert | Trinidad and Tobago, United Kingdom, United States, Sweden, Germany |
| Аллерт | Russia, Ukraine, Kazakhstan, Belarus |