Cognomen Йонк (Jonk 
, Йонк 
) , in all the world, is quite a rare last name. The last name Йонк is characteristic of Netherlands, where it is quite a rare surname, Luxembourg, and Sri Lanka, where it is a rare surname. In absolute terms, it most frequently occurs in Netherlands, South Africa, and Indonesia. Very seldom, Йонк is the forename as well as the last name.