All over the world, סאיינקו (Saenko 
, Sayenko 
, סאיינקו 
) is an extremely rare masculine forename. Much more prevalently, סאיינקו is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Saenko | Kazakhstan, France, United States, Germany, Russia |
| Sayenko | Kazakhstan, United States, Germany, Russia, Ukraine |
| סאיינקו | Israel |