Family name Хатт (Hatt 
, Hutt , Хатт 
) , all over the world, is a common last name. The last name Хатт is characteristic of Estonia, where it is quite a common surname, Switzerland, where it is quite a rare surname, and Canada. Not in comparison with a country's population, this name is the most popular in the United States, the United Kingdom, and Canada. Very seldom, Хатт is the forename as well as the last name.