Surname จัญ (Chan 
, จัญ 
) , in the entire world, is a prevalent cognomen. The last name จัญ is characteristic of Hong Kong, where it is a prevalent surname, Macao, and Bermuda (explore the name in all countries). In absolute terms, it is commonest in Hong Kong, Myanmar, and China. Likewise, จัญ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chan | Malaysia, China, Mexico, Hong Kong, Myanmar |
| จัญ | Thailand |