Last name Wanchan (婉婵 
, วันจันทร์ 
, Wanchan 
) , around the world, is quite a rare cognomen. The surname Wanchan is habitual in Thailand, where it is quite a rare surname, China, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Also, Wanchan is the forename as well as the last name.