Cognomen Arnek (Arnek 
) , in the world, is a very rare surname. The surname Arnek is characteristic of Estonia, where it is quite a rare surname, Sweden, where it is a rare surname, and Brazil, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Estonia, Sweden, and China. Likewise, Arnek is the forename as well as the last name.