Surname Mandzy (Mandzy 
, Мандзий 
) , in the world, is a rare family name. The surname Mandzy is characteristic of Belarus, where it is a rare surname, Russia, where it is a very rare surname, and Canada. Not in comparison with a country's population, it is commonest in Russia, the United States, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Mandzy | Canada, United States |
| Мандзий | Russia, Ukraine, Belarus |