Family name คำหวาน (Khamwan 
, Kumwan , คำหวาน) , around the globe, is a rare cognomen. The last name คำหวาน is habitual in Thailand, where it is quite a rare surname, Singapore, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, คำหวาน is the forename as well as the last name.