Cognomen ช้ำ (Cham 
, ช้ำ) , in the entire world, is a common surname. The family name ช้ำ is characteristic of Gambia, where it is a widespread surname, Aland Islands, where it is quite a common surname, and Macao (explore the name in all countries). Measured by absolute frequency, the name is most common in Gambia, Myanmar, and Algeria. Likewise, ช้ำ is the forename as well as the last name.