Family name Олдьга (Олдьга 
, Oldga 
) , globally, is an extremely rare last name. The surname Олдьга is habitual in Latin America and the Caribbean, particularly Mexico, where it is an extremely rare surname. More frequently, Олдьга is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Олдьга | Russia |
| Oldga | Mexico, United States |