Cognomen 希達 (Hayter 
, 希達 
) , all over the world, is quite a common last name. The last name 希達 is characteristic of the United Kingdom, where it is quite a rare surname, Australia, and New Zealand. In absolute terms, it is the most numerous in the United Kingdom, the United States, and Australia. Very seldom, 希達 is the forename as well as the last name.