Surname Klaey (Klaey 
, เคลย์ 
) , all around the world, is a very rare last name. The last name Klaey is characteristic of Switzerland, where it is a very rare surname, New Zealand, and Thailand, where it is an extremely rare surname. In absolute terms, it is the most numerous in the United States, Switzerland, and Thailand. Much less frequently, Klaey is the forename as well as the last name.