Last name ชาค (Chak 
, ชาค 
) , around the globe, is a common cognomen. The cognomen ชาค is habitual in Hong Kong, where it is quite a common surname, Cayman Islands, and Macao. In absolute terms, this name is the most popular in India, Hong Kong, and Bangladesh. Also, ชาค is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chak | Taiwan, China, India, Bangladesh, Hong Kong |
| ชาค | Thailand |