Surname Chaichan (ชัยชาญ 
, Chaichan 
, ชายชาญ ) , in the entire world, is quite a rare family name. The surname Chaichan is characteristic of Thailand, where it is quite a rare surname, Germany, where it is a very rare surname, and the United States, where it is an extremely rare surname. More prevalently, Chaichan is the forename as well as the last name.