Family name Янша (Jansha 
, Janza 
, Янша 
) , across the world, is a rare last name. The last name Янша is habitual in Slovenia, where it is quite a common surname, Hungary, where it is quite a rare surname, and Czechia, where it is a rare surname. In absolute terms, it most frequently occurs in Slovenia, Argentina, and Hungary. Much less frequently, Янша is the forename as well as the last name.