Cognomen Molodoi (Molodoi 
, Молодой 
) , in the world, is a rare surname. The cognomen Molodoi is habitual in Eastern Europe, particularly Moldova, where it is quite a rare surname, Romania, and Belarus, where it is a rare surname. In absolute terms, it is the most numerous in Eastern Europe, particularly Romania, Moldova, and Russia. Much less frequently, Molodoi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Molodoi | Italy, Spain, Romania, Russia, Moldova |
| Молодой | Kazakhstan, Ukraine, Russia, Belarus |