Last name יונסון (Jonasson 
, יונסון 
, Jónsson 
) , in the entire world, is a common family name. The surname יונסון is characteristic of Northern Europe, particularly Iceland, where it is a widespread surname, Sweden, where it is quite a common surname, and Denmark, where it is quite a rare surname. In absolute terms, it most frequently occurs in Sweden, Iceland, and Canada. Much less frequently, יונסון is the forename as well as the last name.