Cognomen ชัยศิริ (ชัยศิริ 
, Chaisiri 
) , in the world, is quite a common surname. The family name ชัยศิริ is characteristic of Thailand, where it is quite a rare surname, Australia, where it is a very rare surname, and Spain. Not in comparison with a country's population, this name is the most popular in Thailand, the United States, and Spain. Also, ชัยศิริ is the forename as well as the last name.