Cognomen Ainen (Ainen 
) , around the world, is a rare surname. The cognomen Ainen is habitual in Estonia, where it is quite a rare surname, Indonesia, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Indonesia, Estonia, and India. Also, Ainen is the forename as well as the last name.
| gretel ainen badminton player, EE (b. 1987) |
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