Cognomen ケネディ (Kennedy 
, ケネディ) , in the world, is a widespread last name. The family name ケネディ is habitual in Ireland, where it is a common surname, Australia, where it is quite a common surname, and New Zealand (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in the United States, the United Kingdom, and Australia. Also, ケネディ is the forename as well as the last name.