Surname Kaiz (Kaiz 
) , in all the world, is a rare last name. The cognomen Kaiz is habitual in Sri Lanka, where it is a rare surname, Saudi Arabia, where it is a very rare surname, and Myanmar. Not in comparison with a country's population, it is the most numerous in Sri Lanka, Indonesia, and the United States. Likewise, Kaiz is the forename as well as the last name.