Cognomen קואטס (Coates 
, Coats , קואטס 
) , globally, is a common last name. The cognomen קואטס is habitual in Guernsey, where it is quite a common surname, Antigua and Barbuda, and Isle of Man (explore the name in all countries). Measured by absolute frequency, it is the most numerous in the United States, the United Kingdom, and Australia.