All around the world, Йонсен (Johnsen 
, Joensen , Йонсен 
) is quite a rare principally boy's, but very seldom girly forename. The first name Йонсен is habitual in Aland Islands, where it is quite a common boy's name, Philippines, where it is a rare predominantly masculine, but very seldom feminine name, and Norway, where it is a rare epicene name. In absolute terms, it most frequently occurs in Philippines, Indonesia, and the Democratic Republic of the Congo. Much more prevalently, Йонсен is the last name as well as the forename.