Last name Ахвенайнен (Ахвенайнен 
, Ahvenainen 
) , across the world, is a rare cognomen. The last name Ахвенайнен is characteristic of Northern Europe, particularly Finland, where it is quite a common surname, Latvia, where it is a rare surname, and Estonia. In absolute terms, this name is the most popular in Finland, Hong Kong, and Latvia.
| VARIANT | COUNTRY |
|---|---|
| Ахвенайнен | Russia, Ukraine |
| Ahvenainen | Sweden, Estonia, Hong Kong, Finland, Latvia |