Surname จัก (Chak 
, จัก 
) , in the world, is a common family name. The surname จัก is characteristic of 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. Likewise, จัก is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chak | Taiwan, China, India, Bangladesh, Hong Kong |
| จัก | Thailand |