Last name Йонен (Jonen 
, Йонен 
) , throughout the world, is quite a rare family name. The last name Йонен is habitual in Western Europe, particularly Germany, where it is quite a rare surname, Switzerland, where it is a rare surname, and Netherlands. In absolute terms, this name is the most popular in Germany, the United States, and Netherlands. Likewise, Йонен is the forename as well as the last name.