Surname Йонат (Jonat 
, Yonath 
, Йонат 
) , throughout the world, is a rare cognomen. The cognomen Йонат is habitual in Malta, where it is quite a rare surname, Germany, where it is a rare surname, and Canada, where it is a very rare surname. In absolute terms, it is the most numerous in Germany, Indonesia, and Canada. Likewise, Йонат is the forename as well as the last name.