Surname Oleinikoff (Oleinikoff 
) , in all the world, is a very rare last name. The cognomen Oleinikoff is habitual in Sweden, where it is a rare surname, Australia, where it is a very rare surname, and Mexico, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Oleinikoff | Sweden, Australia, Mexico, United States, Brazil |
Greg, Nils, Karen, Karla, Peter, Dianne, Isobel, Margaretha, and Christianne