Surname Платт (Platt 
, Платт 
) , globally, is a common cognomen. The cognomen Платт is characteristic of Namibia, where it is quite a common surname, Guernsey, and Isle of Man (explore the name in all countries). In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Australia. Much less frequently, Платт is the forename as well as the last name.