Last name カーソン (Carson 
, Cason , Casson 
) , in all the world, is a common surname. The family name カーソン is characteristic of Isle of Man, where it is quite a common surname, Jersey, and New Zealand (explore the name in all countries). Measured by absolute frequency, the name is most common in the United States, the United Kingdom, and Canada. Much less frequently, カーソン is the forename as well as the last name.