Surname Lehtokoski (Lehtokoski 
) , in all the world, is an extremely rare cognomen. The surname Lehtokoski is habitual in Northern Europe, particularly Finland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Lehtokoski | Finland |
| aino lehtokoski Finnish member of Parliament, FI (b. 1886) |
|
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| anne lehtokoski FI |
|