Family name ハイアット (Hyatt 
, Hiatt 
, ハイアット) , throughout the world, is a common last name. The surname ハイアット is characteristic of Jamaica, where it is quite a common surname, the United States, where it is quite a rare surname, and New Zealand. Measured by absolute frequency, it is commonest in the United States, the United Kingdom, and Canada. Much less frequently, ハイアット is the forename as well as the last name.