Last name Керр (Kerr 
, Керр 
) , in the world, is a widespread surname. The surname Керр is characteristic of Jamaica, where it is a common surname, Guernsey, where it is quite a common surname, and New Zealand (explore the name in all countries). In absolute terms, it is the most numerous in the United States, the United Kingdom, and Australia. Much less frequently, Керр is the forename as well as the last name.